There is a guy I like and he likes me, and recently when we were out he was quite flirty with a friend of ours and the impact it’s had on me has been horrible. I keep getting vivid flashbacks of them flirting almost like PTSD which I’m aware sounds very dramatic, but that’s what it’s like. I just keep having these flashbacks as if I’m reliving it again. I feel sick when I remember and my inability to deal with it is making me feel so horrendous. I suspect I have borderline personality disorder which would account for the strong feelings but I just want to make it stop. It makes me feel like I can never be involved with anyone again. I feel so sick because of it.