Red flag?

I met this guy around two months ago we went on dates and we just clicked straight away the chemistry between us is amazing we were seeing each other near enough every other day. He’s perfect to me I like everything about him but around 2 weeks ago I became suspicious about a girl that constantly comments hearts and lovestruck faces on his Instagram, I know it’s only social media but I wanted to know exactly what it was so I could figure if the situation is for me. I confronted him and he didn’t say much other than I don’t need to worry about anyone else all I should care about is how he treats me. I didn’t really like his response because to me that was him telling me he can do what he wants in terms of other girls and I shouldn’t be bothered by it as long as he treats me nice. The conversation kinda died after that, and he started acting off with me then the next day he just ghosted me I called I texted and I got no response at all for TWO WEEKS! I thought I’ll just get over it even though I liked him but then I went out to a bar at the weekend and I was having some flirty banter with the bartender who happens to be super attractive too when he pointed out some guy watching me and when I looked it was him! I just ignored him then he came over and said he wanted to talk I told him I wasn’t interested but he wouldn’t leave then the bartender told him politely to leave me alone and he got super angry and threw a glass bottle at the bartender. I rushed out of the club with him before the police came and got in the cab to go home but he jumped in with me and would not get out so I ended up going home with him. He told me that he wanted to be with me and he only ghosted me cos things were getting too serious and he didn’t think he was ready but now he’s realised he is. I can’t lie and say that’s not what I wanted to hear but now he’s suddenly acting really possessive he doesn’t want me to be away from him. I love spending time with him but part of me is wondering if he’s showing me signs of being toxic and should I go with the flow or run while I can?