Ex advice..

My ex and I broke up two weeks ago over an escalated fight. He just snapped and did a 180 and ignored/blocked me on everything, started being mean to me, etc. We haven't talked in two weeks. He finally text me randomly a day ago and said he missed me and thinks about me all of the time. Since then, he's been texting me and texts back so fast, we play iPhone games together, we met up today to walk our dog. No touching or kissing or anything, just talk.. we agreed to see where things go and not commit right off the bat again because we went way too fast to begin with. Some background: we dated for six months. He moved in after one month. He moved out after our fight and now I live with my mom because I don't want to live alone there. Our fights were mostly caused by me.. I was so insecure from my last relationship and always thought he was lying, looked through his phone, questioned why he would talk to any girl, etc.. after losing him, I plan on changing this and just trusting him and being the best I can be to him. Do you think his behavior is that of someone who wants to try again? Is he just lonely? Any experience with this?