In An Awkward Situation 😞

I used to talk to a guy a couple years back and I found out he had been texting his friend who is a girl. I blocked him and wanted nothing to do with him. I went back onto Tinder 2 months ago and we got back into contact but I still had that girl on my mind. We have been getting along so well, we’re supposed to be meeting this weekend but I noticed that he liked this friend’s profile picture yesterday. My problem is that he used to have a crush on her and I just got bad vibes about the whole thing. I don’t know if I can trust him, my gut is telling me to just give up. He is claiming to be in love with me even though we’ve never met and that he is fully invested in me. I tried to break it off last night and he started to guilt trip me and said he was going for a walk because he ‘can’t do it anymore’. I immediately thought he was going to kill himself and I called him straight away. I asked him not to do anything silly.. He then said he was going to have a relapse (He is an ex drug abuser). I really don’t want this on my conscience and I don’t know what to do 😞