Has anyone worked out well going back to an Ex?

My ex and I broke up about 3 or so months ago. Our relationship had both ups and downs but that’s in every relationship I guess as we learn about another person. We had a stressful last couple of months as we were finishing school and were in the midst of exam period. We ended on really good terms and we tried to be friends but it was just too awkward for us. I can’t stop thinking about him and looking at pictures from good memories we had. I’ve tried to see other guys and it feels good for a while then my mind just wonders back to him. I haven’t talked to him in ages because Ive tried not to to try to get over him. Should I give it another shot now that we’re both out of school and are heading off to uni or or just leave it?