My bf and I have been dating for about a 2 years. One of his closest friends/housemate is a woman who he got to know about 6months before we started dating. He says she's really nice and supportive. The problem is, I feel like she has always been hostile towards me. I have told him to invite her to eat with us when I'm staying at his so that we get a chance to speak many times and she always refuses. I've tried sending her things she's interested in to try to spark conversation online. I have tried to initiate situations which can help us get to know each other but she's never responsive. I asked my bf to invite her to hang out with us but he said she doesn't want to third wheel. When I'm in their kitchen there have been times she has walked in- and out of the kitchen as soon as she saw me. If both of my bf and I are in a common space, and I leave to go to the bathroom I hear her come in and chat and laugh with him. They hang out a lot, sometimes getting drinks or going on hikes together. She seems to be friendly with everyone but me. I personally believe that a good friend will take the time and effort to get to know your partner and help them feel welcome, but I feel like I have never felt this from her. My bf says that she's a really good and important friend to him and I recognise the importance of having a friendships circle outside of your relationship and I don't want to get in the way of this. I've never asked him to cut her off, I just wish she was nice and respectful to me. When I try to speak with him I feel like I'm interpreted as being controlling. I'm sure I have my own insecurities I need to work on, but I have a bad gut feeling about this situation and I don't know how to resolve it.
TL;DR: bf's female friend is nice to everyone but me and never makes the effort to get to know me. Their relationship makes me uncomfortable.