Started seeing a guy recently for something casual, but as it turns out he's going through a lot and I feel as though he's latched onto our very short relationship heavily. He's not malicious at all but he has displayed some manipulative behaviours and although I care about him, I can see this behaviour will end up negatively affecting me (it already has to a limited extent and I don't want that to continue). I don't know if he actually has BPD but it seems to line up quite well, and he's regularly entertained the thought of suicide but hasn't got a plan to do it (I think he's just very overwhelmed with everything atm). He has friends trying to help him but he's not in a state of mind to listen to advice and refuses to get a diagnosis/start medication or therapy, in part because of external factors but also because he sees these as "failures". Because of all this, I'm struggling to find the best way to end things with him and would appreciate some advice. I'd like to be there to support him but without the expectation of becoming a couple or regular sex or anything like that; he's told me I'm the only thing that makes him happy and that he might have tried to kill himself if I hadn't been there etc. I feel like I'm stuck between a rock and a hard place, but I think the best thing for myself is to get out of this before I get sucked in too deep... Any opinions and advice are very welcome, I feel like I'm coming across as coldhearted but I'm having to be clinical about this to make a decision.