Let me help you out. Forget about her and forget about him, fuck em. When they are around pretend ( which will be difficult) you don’t care about their shenanigans, hell you actually think it’s a good idea now. Then go out and have some fun, download tinder and get laid asap. Also find a local Brazilian jiu jitsu school and start Training a few times a week at least. This will help you get strong , mentally and physically, learn to defend yourself, and make a shitload of cool new friends. Also women like men that can take care of themselves, fact. Now don’t ask questions and make this happen. Within 3 months you’ll have forgotten about that old skank your Roomie was bangin