No wedding meeting my long time crush again

My fiancé and I have been getting into arguments a lot lately every since he got his new job and has not been spending a lot of time with me so recently we just called it quits and went our separate ways I was not expecting that to happen we were supposed to have gotten married this November but the wedding is off because we're not getting along so Sunday I get an unexpected message on Facebook from my longtime boyfriend of 5 years saying that he was in town and he wanted to see me so he comes to my house and have been catching up for hours of talking he finally tells me that he moved back in town from Colorado and how he missed me so much and now he's looking for a good job and wants to find an apartment for me and him to move in by the fall I'm still in love with him and he still in love with me I want to be with him and work this out but I'm so scared to get my heartbroken again since he's cheated on me in the past but my heart just won't let go of him I told him if I take him back I want us to get married and be a family but I just want him to want the samething ladies any advice on what I should do about this relationship