Roommate issues

Ok, this is gonna be long so strap yourselves in or leave.

I met my roommate last year and at the end of the school year we decided that for senior year, we’d move in together. It’s been great. Until about now. Lately I’ve been feeling invisible and lonely and she’s got a bf who is literally always at our house. I feel like I live with them rather than him being a guest in our school apartment. Anyway, I have a tendency to overreact and jump to conclusions but the last time we really talked, she said she wasn’t mad at me so idk, but it just seems like she’s irritated with me. Like earlier today she came home from work and didn’t even acknowledge that I was here. I’m honestly at a loss. I don’t know how to go about telling her and I don’t know if I even should because I can be a bit overbearing sometimes, so I’m trying to give her space. Any advice would be greatly appreciated, but I cannot deal with this this semester.

And before anyone says that she’s probably just in a bad mood, she’s not. She is upstairs laughing and playing with her bf and having a grand old time...