My niece is staying with me this summer before she starts college next week. She's been constantly flirting with me and I've been trying to be the good uncle and ignore it, but still pay attention to her. We didn't grow up together and I only saw my niece at the occasional family gathering every few years. She's always clung to me and we've always been comfortable around each other.

My sister is 20 years older than me, my niece is just a few years younger than I am. You can get your mind out of the gutter because she is legal age.

I came home from work one night and was beat. I took a shower and told her I was going to take a nap. She said she would cook dinner and wake me up when it was done.

She woke me up all right, she woke me up with a blowjob. God forgive me but I didn't stop her. We made love, dinner got cold, and we've been sleeping together this past month.

The original plan was that she would move into the dorms next week, and I'd be back to living the single life again. My sister called me today thanking me for letting my niece live with me and before I could tell her it was fun having her here this summer she hit me with, "She is going to save so much money living with you instead of the dorm!"

When I confronted my niece about this she was upset and said she thought it made sense since we were a couple now. She started crying and that lead to me comforting her and telling her it was okay for her to live with me, then we fucked all night.

The next four years are going to be interesting. I never expected to be in an incest relationship. It doesn't feel like one, we never lived together but always liked each other.