Talked to ex, thinking he is definately regretting it.

[ms.ac]

So my ex has contacted me a few times and i finally talked to him two weeks ago, the conversation went well, i wanted him to know i was happy and he doesnt have control over my happiness anymore,we broke up in september after 4.5 years, we started to talk again, he made me believe he was working on himself and wanted to be a lone but possibly with me in the future, in late nov, beginning of dec the truth came out that he was seeing a girl at his work, much older, divorced, kid, horrible person (not just because i am biased), well i was crushed, he threw it in my face and made me feel horrible about it, told me she was everything i wasnt that he was trying to decided between us two and chose her, made fun of me said mean things etc.. i was heart broken but i wouldnt let him ruin my life, it took time but i went on with my life making myself happy, working on myself, having fun, talking to other guys, he began contacting me but i didnt answer, i finally answered a couple weeks ago and talked to him, i saw him last week with a girl in his car and it hurt, even tho by now i thought it wouldnt, i talked to him again yesterday at first he was putting up a front like he was great, his ex from like 6 years ago is trying ot contact him and i think he feels good that she is.. not that he wants anything to do with her it just boosts his ego, and he was being nice, offering to do things for me.. i made sure i let him no he did me wrong.. he made it a point to let me know he was single, not directly but in discrete ways, and to say that he hangs out with girls just as friends (im thinking to cover for the girl in his car) i know i cant believe him, he showed some regret, he said he cant change what he has done and stuff... the problem is i still love him, i dont want him back , not now at least, he would have to do a lot to get me back, and i dont want him to think he could just get me back, he needs to learn that im not someone he can throw around, i dont know what to do now.. i need advice, when he calls me again should i ignore, should i wait a while to talk to him again, i want him to really realize what he lost and that he cant just do whatever he wants. I believe everythignn happens for a reason, everything you go through makes you stronger and helps you grow, if we are meant to be we will be.. but not right now.. he needs to learn from his mistakes and realize he can't just have me back.. any advice??