<human>: My uncle recently married a woman he was dating for less than a year, which is sort of a trainwreck. Anyway, she has a daughter about my age who is really beautiful and we have a ton in common. She lives about an hour away, and she is going to the same university as me in the fall. I met her for the first time this past weekend at a pre-holiday gathering that our family had.

My uncle, as usual, was pretty drunk. He came up to me and said something to the effect of, "She's hot, why don't you go make a move!" It just took be back because 1) that is his stepdaughter; 2) he is saying she is hot; 3) he wants me to hook up with a relative (by marriage). 

His wife told him it was inappropriate but her daughter, I'll just call her Sarah, was bashful about it but seemed somewhat open. We talked a lot at the gathering and she definitely was flirty. My uncle even told me I could go there any time I wanted and could stay in her room because, "You two are cousins, after all." His new wife eventually said I am sweet and that she would love for someone like me to be with her daughter. 

I have two somewhat related questions. First, is my uncle being a creep, in general? He has never been in my business about dating before, not that we are all that close. We have also never talked about girls or anything. 

Second, we are not blood relatives and probably would have hit it off had we met under other circumstances. Is there any reason why I *shouldn't* hook up with her or at least go and hang out some? It would be nice to have a friend at the university, anyway. I'm kind of shy, and I feel like this would be a good in. If it doesn't work out, then we can just be friends. I feel like this might work out for me but am concerned that I am overlooking something.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Uncle really wants me to hook up with his new stepdaughter, and it is kind of creeping me out. Then again, we did hit it off and it could be convenient. Not sure what to do.