Me enamore de mi hijastra

It's happened to them that they feel physical attraction towards their stepdaughter? It has to me! Until recently, I started seeing her in a different light. I can't deny that I like her, she's a very reserved, kind, funny and beautiful girl. I've noticed that she's caught on when I look at her differently, we've locked eyes and looked away again. I see her legs and know she's aware of it. I feel like she does it on purpose because she wears short shorts. Sometimes she likes to stay in my bed instead of going to her room. She plays with her delicate clear feet (I really like that), changes position, and occasionally shows the color of the underwear she's wearing.