Should you go on a date with an ex you don't trust?

Me and my boyfriend of almost 4 years had an argument and he suddenly broke up with me and then took off to work. It was very much out of proportion to the argument at hand but he says we fight too much even though he agrees our last argument was 3 months previous (and the one before that 6 months) he feels this is too much arguing. So maybe 3 or 4 arguments a year. So he starts immediately acting all nice to me and wants to be friends and I told him NO. If you call me then it needs to be with the understand were dating and/or in a romantic relationship or forget about it I am moving on. I need no contact to get over you and find a new man to be in my life eventually. So he has been calling and being very nice. He is still telling me he loves me. He says dating is a great idea to see we still have a spark and chemistry still.

Previous to this we were planning to move in together and I suspect he got freaked out of taking the steps towards that and instead of telling me he just broke up and ran away. So I don't trust him. This isn't the first time he has hurt me because he is emotionally immature.

So, I am spilt, should I date him and explore the "spark aspect" of things? See first if we even want to continue with one another and then later if/when more then dating comes around address the trust issues? Or no I shouldn't date him because I no longer trust him?

I know dating was my idea but a month later I am now unsure.