Need help

So my ex( baby dad) and I have been talking about getting back together if he got a job and a car. We’ve been together for three years but broke up in September for good , he still wasn’t working I lost my apartment at 5 months pregnant in 2017 I moved to my moms he did his. Well he just got a job and a car. So excited but I’m very worried he’s gonna move back in and quit the job.😭😭😭 itold him I don’t want to live with him ever. (Found out at gender reveal he was dating someone) so my trust is like gone! 😓I just want some input I do wanna be with him but how can I trust him? He won’t get a place of his own like I told him to do for at least 6 months. I just can’t loose everything I’ve worked for again. He also says he won’t live if we don’t stay together. I hate that. Knowing that if it don’t work again he’ll end everything. Just hurts why some men can’t live through tough times for there kids like most moms do🤔