The Misadventures of Awkward Gay Boy

I (21,m) recently started seeing this guy (28,m). We've met twice so far and a third meet up is scheduled. I'm usually very bad at meeting new people and really awkward. With this boy.. it's worse! I find myself not being able to form coherent sentences, lose my train of thoughts, make weird noises and expressions. I come off as stoned, which he has told me himself. I told him at our first date I'm in therapy (depression and panic attacks) and on medication for that. So now every time I say "I'm usually a normal person to talk to" I fear I make it worse and make him think I'm on the spectrum (not that that would be a bad thing, I'm just usually more relaxed and "woke"). I told him right after the first date, that I believed he was nice guy but if he only were into casual stuff we should stop (that would really fuck with my feelings). I always fear he's not liking me back and I'm asking you to help me bypass the time we don't see each other and stop my head from spinning and not being scared of losing something I don't even have yet. I'm just really anxious when it comes to opening up to someone and making myself vulnerable to them. Yesterday we had our second date and I was to afraid to make a move for the first kiss (he was giving me signals but I was just too scared). I fear the more we see each other and nothing happens the more we lose the opportunity of becoming "more". Third date (if it'll even happen) is kind of very late for the first kiss.