My boyfriend is my teen stepdaughter's biological father but I'd never let that stop me. He loves her more than anything and I love that he's taken steps to be there for her. I recently went to spend the night with her at her birthday party (the one where her big birthday is coming up) and her dad decided to spend the day with us instead. I thought this was a very nice gesture on his part and even called him the night before to see how it went. While I appreciated that he wanted to spend time with her, I also noticed that he kept leaving the room while we were in the room getting ready to celebrate her big day, which to me, was very suspicious..