Need help!!

So 28(F) I was in a relationship(27M) 6 years w/ 4 kids one in the way. We recently broke up back in June 2025 because he had other females from his job texting him talking about wanting to have his baby , calling him papi chulo etc. he claimed it was nothing and told those females that he’s faithful but if they knew from the beginning you was in a relationship & you called them your “friends” why do they even feel comfortable to text you like that , all hours of the night etc. ya was suppose to get married in June but because of this it was no longer happening. Than after find out that he was telling your business and your kids business to that same female and she throwing it in your face not only that to see messages of him and his family members talking real nasty about you and what they going to do to you when you give birth. And he’s laughing about it and stuff and when you confront him he like that’s was all jokes but your life isn’t a joke when other people making threats about you. Fast forward ya go back trying to work things out still not in a relationship but doing “relationship” things. Only to find out he’s actively on grindr looking for sexual interactions with men, he don’t know that I know. Idk what to do I’m hurt disgusted sick to my stomach fell played all over again. Like I’m trying to keep my composure cause I have kids to focus on and I don’t need them seeing or even feeling this negative energy but I’m literally lost . If I bring it up he knows I seen something and if I don’t I’ll continue to be a fool. Do I just play it cool and silently let go of this love even though ima be hurt or do I crash tf out??? I’m a retired crash out , haven’t had a crash out episode in a few years and I’m trying to continue this growth but the evil is wanting to build up and just be very spiteful and deceiving but my head isn’t like that anymore.