I feel i need closure from?

so me & my ex just recently broke up we were together for a year six months,we met at a baseball game long story short he asked for my number,soon after we began to talk never did i expect anything to happen between us but it did we began dating after started a relationship,even planned moving in together everything was great when we were together a while after he got laid off his job,so he began stressing i tried helpin out as i could at first things seemed fine later on is when he started becoming distant i would ask him what was wrong & he would say it'd be bc he had no job so he felt less of a man,that he had nothing to offer me i would comfort him as i could even helped him finacial wise,but things only got worse so i confronted him about it & he said everything was gonna be fine to just keep my patience & we would get through it so i did but i didnt see a change soon after he wouldnt even talk to me,so one last time i confronted him about it but he ignored me the nxt day his friend was talking to me about some party they were having & asked if i wanted to go i said sure,then i asked if my ''bf'' was going & his friend had thought we were already broken up so he said yea but hes going with his new girl so i said id go anyways so i showed up & saw him there with the chick even went up to him & said oh hi is this ur new girl thats funny bc i dont remember you breaking up w/me, he didnt say a word,so i hung around at the party for a while but then left but everything was left at that & even all that happen i cant seem to get over it at all i find myself crying but at the same time am very angry about how things went about,bc i feel hes gonna come back ,i feel i need closure from him but dont know what to do about it?