Looks like you stopped doing what worked to bring him back.
Some men need a challenge.. or they get bored..
I remember you were going out and having a good time and even wondered if you wanted him back..... seems like that's when he suddenly started to pursue you.... when you were pulled back and seemed happy doing it is when he came back toward you... or have you forgot that important part?
I would go back to that if I were you... Stop any and all relationship talks.. Go into your own "little world".. Start doing things without him......
Text others while he is around......
Less talk.. own little world.. out having fun. enjoying life.....
Seems to me that is what worked before.... Sometimes the way to get a man's attention is to let him wonder what YOU are thinking and up to.....