I am in a friends with benefits/ casual relationship type thing with this guy whom I have fallen for and has become my fp I think:/ 

Unfortunately, I don’t know much of the details nor do I feel comfortable sharing too much about his story here, but he had a friend with BPD years ago who was very very depressed/ suicidal and self harmed, and would use threats of engaging in these behaviors (he refers to it as manipulation, but I don’t like to call it that, because she was clearly suffering and needing help and didn’t know how to ask for it). He still has a lot of PTSD from carrying so much of her emotions that he now has no room to give ANY support or he gets triggered, panics and immediately views you as trying to take advantage of him or manipulate him. 

Most of the time things are fine, and when it’s good, it’s so grand! We get along so well and have so much fun together, but just the other day I had to take an antibiotic and silly me forgot to take food, so I immediately felt nauseous. I was laying on the floor, and apparently the way I was laying reminded him of her exactly, and he got upset the next day and was very cold and callous. He then apologized after but this is a common cycle and it’s so painful constantly censoring myself and never even knowing what will set him off (especially something I couldn’t help at all). 

He is starting therapy and he recognizes that it’s not me at all, it is his reaction and he needs to put in the work. But it’s just such a painful cycle. Everyone thinks I should just break it off but I don’t want to lose him. Anyone have any advice? :/