Closure, closure , closure?

so me and my ex have just recently broken up , we had been together for a year six months , we met at a game long story short he asked for my number soon after we began to talk never did even expect for anything to happen between us but it did we began dating and so on we 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 things seemed fine later on is when he started becoming distant i would ask him what was wrong and he said it'd be bc he had no job and felt less of a man bc he had nothing to offer me i would comfort him about it as i could even helped him out finacial wise, but things only got worse so i confronted him about it and he said everything was gonna be fine to just keep my patience and we'd get through it so i did but i still didnt see a change soon after he wouldnt even bother talking to me , so once again i confronted him about it but he ignored me the next day his friend was talking to me about some party they were having and asked if i wanted to come i said sure then i asked if my ''bf'' was going but his friend thought we were done and that i knew he had a new girl so he told me yea hes going but with some other chick so that i wouldnt look dumb i said its cool that doesnt stop me he said ok cool just let me knw when your here so i went to the party and showed up saw him there with the new girl told him i thought it was funny how he had a new girl when i didnt remember he had broken up with me he didnt say a word i stook around the party for a while then left but everything was left at that but even though that happen i cant seem to get over it at all i cry about but at the same time am very angry about how things went, i feel i need closure from him but dont know what to do about it?