Why does your boyfriend's father not like you? Does he mind your daughter? Could your daughter occasionally spend the night with your boyfriend and his kids at his father's house?

I don't know, but sounds like you are too involved with the boyfriend if you can't find other interests of your own to do while he's away with his other family. I would relish the time alone with my daughter and ability to do different things that only we want to do, that he may not want to do, "girl things". I would use the time to expand my own life/world or "rest" and have time to myself, get things done that I can't during the week, etc.