I completed 12 sessions of DBT at the beginning of the year (all I could get on the NHS. Apparently I was lucky to get that) and it did help, but I seem to be sinking back into BPD episodes. I've been chatting to someone on Discord but I had an episode Thursday night and he was very kind letting me vent, but I didn't hear from him yesterday and now I'm worried I've scared him off. We had originally agreed to see how things go between us relationship wise but at the moment are just friends. Before we said goodnight on Thursday he did warn me he might not be around the next day (yesterday). I asked if he was discreetly going off me and he said no, but he might pop on the server briefly to say hello to everyone. Well I didn't hear from him but in my head I am terrified I've ruined everything and I will never hear from him again. The Discord server itself is very flirty and the majority of my friends are on there because I have severe anxiety. So I'm not only anxious about having lost him, but I'm anxious about not being able to use the server in case he pops up on there flirting or just talking to everyone else. 

I really wish I wasn't like this. He himself said I was overthinking and catastrophising which was absolutely true, and I guess I still am. But I need advice on how to deal with this and some perspective.