I don't understand a 37 years old Aries Man

So as a 27 years old woman i have been seeing the same guy in a weekly cultural language event.We have met last year June or something .We might have seen eachother many times because i attend the event most of the time and he also attends when he doesn't travel. The first time we met he asked my number or instagram and i gave my insragram contact. Earlier he was messaging to know If I will come to the event or simply just to open conversation (but not long sometimeshe even answered 1 day later😂 maybe bcs of his age). Later whenever I went, he was coming next to me and and seemed somehow interested, or for example he was obviously staring at my chest. LIKE so often ? he told me couple of times let me know when you are in the city etc.(to meet) one time I texted him and we were going to go to a Café but time wise it didn't happen. Some time later we went to a horror escape room as a group.Then before Christmas I wanted to flirt with him more obvious and since there is a bit age gap and I am not good at this... I opened the dating conversation. I was kinda shy and I couldn't have looked directly sometimes but he was smirking .Anyway he has no kids and no wife .He talked about just going somewhere in the Christmas holiday ,visiting some other city and i told him if you want i can accompany you and when we were leaving i hugged him and he told me ok then i will let yku know ? Then we left. After the christmas holiday we met again at the cafe (because he didn't let me know) he started talking about how he went to a party with a italian girl (i think she is also friend of mine from the event)and the dj was bad .I was kinda disappointed and thought ok this guy has no interest at all, he follows %90 women from different countries because he travelled and lived somewhere else .He makes no move at least to me but again he comes next to me often and sometimes he talks some other women too because he knows multiple languages and we are at a cultural event. He is american from boston btw who lives in Europe now .My question is he knows I am interested,and I beleive he is attracted to me he has a chance to write me and before he said multiple times that I let him know but he never makes move.Whats the point?