Ex boyfriend problems.?

Me and my now ex boyfriend were together for eh let's round it to a year between dating and talking and then being exclusive. I broke up with him about a month ago. Reasons for breaking up, well he has depression and blamed it on that, but he was being scetchy and got caught up in lies and he literally would only answer my texts and calls if i made it sound like i was in trouble or something big was wrong. so ulitmately i was being neglected and it was putting me to the point of i felt like i had no other choice. i told him i regret it and he says he regrets putting me in that situation himself. we stilll havent returned clothes or anything back to eachother and we still keep in contact not as much as a couple would but enough. i can honestly admit i do seem to jump on him but i dont know how to react with all this i hear rumors of cheating and then ill also ask if were ever guna fix this so i just im to the point where i don't know if theres anything i should specifically say to him or be straight up honest about my feelings (he does know i want to work on this and ive heard him say he wants to too). he also is still battling his depression and that's why this is hard for us to forget this whole thing and try again. he is also a very thicked headed person and he's just that kinda guy. As of now with our status we were texting an hour ago and he got mad when i brought up questions about him bragging about our sex life and texting this one girl with intentions. also i have been talking to a friend and its one of those things that might led somewhere but he knows my situation. so right now im wondering if anyone as any kind of advice as to what i should say or do with my ex boyfriend because at the end of everyday i do love him and want him back and want to fix this..thank you in advance :)