What should I do

When I flirt a little too much and almost end up in a relationship. Well fuck, lesson learnt! This guy I’ve met over instagram October last year. We party together, drove around together, chilled and hung out together. All that shit ya know. Until over the weekend we decided to try a new club. It was great, great music, awesome drinks. Until I saw a guy friend I’ve been friends since forever and he legit just said my name and gave me a hug because I haven’t seen him in so long. Anyways since after that he (this guy I’ve been seeing since October) been acting really weird towards me the whole night asking if I’ve fucked my friend, and what was going on with that hug. Blah blah blah. It legit was a simple hi and bye. That’s all I said. He got shitty we left the clubs and went back to the hotel and he kept going on on how I know this guy. And what was the history between us. As I kept telling him he’s a childhood friend and I’ve never seen him in years. So skip to today where he keeps sending me one word answers.. he asked me if I’m friends with him on Snapchat and Facebook. I told him I’m friends with him on Facebook but not Snapchat. After I told him that, he deleted me off everything. Blocked my number. Ugh so frustrating. What should I do? I’m tired of this. Should I just leave it as that? Should I try reaching out to him? All it was, was a friendly hi and bye like I said. This just got out of control.