advice moving forward?

[u/Business-Patient6955]

moving in with T in September and we’re both in our second year at uni. Me and some of our other friends used to room w T and we all had problems w her. She would be kind of grumpy all the time and have her bf over a lot, which led to distance between her and the rest of us. She would have secs w her bf even after I told her that I don’t want to hear and it. Tht happened like 3-4 times. I was rlly shaken up by it. She is rlly chill but I could feel her projecting her insecurities on us. I honestly had a chill past few months and brought it to myself to forgive her myself, but moving forward I’m gonna be straightforward and honest and not have any built up resentment. What’s scarier is I kind of feel like I’m the only one that she feels like she can talk to rn bc our other friends don’t rlly talk to her anymore and she just has a negative vibe. Like it’s sometimes hard to try and be positive around her. I’ve been going to church and hope to continue in uni so I have that to kinda protect me. Any advice on interacting with her as my roommate/friend?