Close knit family

the idea of getting my cock between her cute little ass cheeks, I wanted to know if she'd thought things through, too.

Her blush darkened before she answered 'Um… I, uh… I'm… I'm empty — you know, inside, so there won't be any, um, mess. And… and I figured that if we could do that, then it would probably stretch me… you know, there, kind of like what happened with Karen when she was with you the first time. Except that because my butt isn't where I'd usually have sex, it might, uh, bother me more… you know, afterwards. That's why I wanted to try it on a weekend like this; I figured I'd be okay by the time I had to go to school again on Monday, if that happened. And…

and I know that if we can do that, and you climax, then… then your stuff will be inside me -

except that after we do that, I might not be able to um, close myself all the way, and that your semen might… might leak out of me. If that happens, I think I'll be embarrassed — not about you leaking out of me, but because I couldn't stop it from happening, is all.'

She'd pretty well deal with everything that I thought could or would happen, so there really wasn't anything else for me to do but ask her 'I'm guessing you wanted us to do that tonight?

Now?'

A trifle embarrassed, she answered 'Well, yeah, if we can…' as I watched her nipples erect slightly in anticipation.

'Did you bring the baby oil with you?', I asked.

'No. I wasn't sure that you'd actually say yes, and I didn't want to seem like I was just assuming you'd do anything I want by bringing it down. It's up in my room.'

'Well, I did say yes, so I think you'll want to go get it, don't you?'

She nodded her head, but sat there for a couple of seconds before realizing that nothing else was going to happen until we had some kind of lube readily available. Blushing again, she quickly scooted herself off my lap and headed for the stairs; as she hurried away, I couldn't help looking at her tight little butt and thinking about what we would be doing. So that I wouldn't frighten her or make her nervous by having a raging hard-on when she got back, I managed to limit myself to only getting semi-erect; when she got back downstairs with the bottle, I saw her looking at me when she saw what state I was already in.

Before she could sit in my lap again, I got out of the recliner and went to stand in front of her.

Gently taking her by the upper arms, I told her 'Donna, sweetheart, this is something really special — not just for you, but for me, too. You're offering to give me a very special part of yourself, and I want you to know that I know how special this is. You know I'm not going to hurry you, or do anything to hurt you; but I want you to know that I'm not going to be angry or upset or anything if you want us to stop… any time, for any reason, or for NO reason. Even if you decide you don't want this to happen, it'll be okay with me, because that last thing I'd ever want you to do is something that would make you unhappy. So don't worry about ME, at all. Just do what you think is right for you, and everything will turn out all right… okay?'

Smiling, she nodded before telling me 'I will, Uncle Ted. Thanks for telling me all that, even though you didn't have to — I already knew that stuff.'

With that, I tilted my head forward so that I could kiss her; as it progressed, I slowly moved my hands from her upper arms to her back, then gently pulled her close so that I could gently hug her. She hugged me back, and when our lips finally separated, she looked up at me and said 'I love you, Uncle Ted, and I know I can trust you. That's why I wanted to try this with you.'

Smiling, I simply asked 'How about if we have some fun with each other before we try to find out if my penis will fit in your butt?'

Her nipples erected again a little bit as she told me 'I'd like that…'; a second later, she pulled back from me before taking my hand and leading the way to my bed.

As we were walking, it finally sank in for me that things would probably actually be easier for Donna than they had been for Karen, for a couple of reasons. First, Donna was physically larger than her sister, so there was less of a mismatch between my erect organ and the opening involved. Second, and more importantly, there wasn't going to be any additional obstruction in Donna's nether opening — we'd still have to deal with the fit, but there wouldn't be anything like a hymen blocking the way once we got past that point. That put my mind considerably at ease, leaving me free to enjoy the sight of Donna's cute, tight little ass moving in front of me.

With both of us already nude, there wasn't any reason for Donna not to guide both of us right onto the bed when we got to it. Once we were laying on our sides and facing each other, my first considered action was to kiss Donna — softly, on the lips, trying to say without words how very much she meant to me. The kiss I got back told me that I'd gotten the message across, and that she felt the same way about me.

We continued to exchange kisses, and although they stayed loving and affectionate, the physical desire we began to feel began to make its presence known. Our first touches were gentle and non-sexual; but that, too, slowly evolved as the level of our arousal and passion increased.

Several minutes had gone by before my hand finally settled over my niece's breast, and a few more passed with my fingertips again delighting in the feel of her warm, firm mammaries before she moved to lay on her back so that I could reach the other, as well. In response, I propped myself up on my elbow so I could reach all of her.

Even as I was reacquainting myself with the most obvious symbols of her femininity, Donna was touching me in return — her hand was in almost constant slow motion as she felt my chest and shoulders, caressing my face and sides, and running her fingertips through my chest hair.

After a while, both of us were breathing heavily enough that kissing became too difficult, and we silently agreed that the time was right to move on to other things. After I'd slowly kissed and licked my way down from her face and lips, I was able to start tending to the smooth orbs of her breasts with my lips and tongue. I softly nibbled every square inch of both mounds before finally taking the peak of one breast between my lips. I found her areola and nipple were already standing out from the rest of her bosom, but my careful and gentle attention soon had them tight and hard with her arousal; then it was time to do the same for their twin. Before I was finished, both of her areolas were puckered, and her nipples standing tall and proud — and faintly glistening with my saliva. When I pulled my head back to admire my handiwork (and the delightful targets of my attentions), Donna told me 'I want to do you, now.'

I smiled down at her as I answered 'Only if I can do you, too.'

Visibly delighted, she nodded her head, and I moved so that she could sit up, then continue on until she was on her knees. I lay down, and she let me help guide her so until she had a knee on each side of my head. Looking down at me, she told me 'It always makes me feel so excited when I'm over you like this, knowing you can see between my legs. I know what you're going to do and how you're going to make me feel… it makes me so happy, knowing that you love me that much.'

What she said touched me deep inside, and I replied 'And I feel the same way — excited at seeing you, and knowing that you love ME enough that you're willing to share yourself with me this way.'

I'll always treasure the smile she gave me before she leaned forward, and got herself positioned over me. When we were situated so that we could tend to each others desires, I once again looked at the view of herself that she was giving me — the light-colored delta of her pubic hair, divided at the bottom by the cleft of her sex, with the edges of her thin and soft inner lips barely visible. With the source that close, the scent of her arousal was easy to discern, and just as appealing and arousing to me as ever.

Whether by coincidence or design, Donna took me into her mouth as I first slipped my tongue between the delicate folds bracketing her opening; as I began doing what I could to increase her arousal, she did the same for me.

It was my thinking that it would be best if I could bring her to an orgasm before trying to do what she wanted me to, so that she would be at least as physically relaxed as possible so that it would be as easy as possible for her as we found out if my erection could reasonably fit through the portal of her anus; I figured that by taking things as slow and easy as I could would address any other issues.

Though I didn't tell Donna what I figured to do, she seemed to have at least a similar idea in mind — while I was steadily moving her closer and closer to a climax, she gave every indication of being content to simply get (and keep) me erect. Free of any 'distractions', I was able to focus my attention on her, increasing her pleasure and arousal even more when I got the idea to move one of my hands from one of her firm buns so that I could use one