Help me make it make sense

Kathy • Mommy of 3 🤴🤴👸

So the night before last my dude falls asleep with his phone unlocked.............so I decided to snoop a little............and guess what I find?????a convo between him and an ex....he's asking her if she misses him or what not....so she says she does....he ask her what do she miss about him.....she says she misses his smile...he says so u don't miss this dick and tongue...she says she didn't say all that and laughs...he tells her he miss holding her while they sleep together.........coming from a man that says he wants to spend the rest of his life with me...........so I confront him when he wake up and told him since they miss eachother so much I'll step out the way and let them have eachother.........here's the lie....he says I haven't been compassionate and affectionate enough and that he really misses it with me and not her...that he was just making conversation to get her to join us in a 3some when he could have asked her we seen her in the club I guess he had to inbox her to secretly tell her he miss her.....and u really gotta tell a bitch u miss her just get a 3some started?????????#2.....how u miss things with me and tell another girl u miss it with her??????and another thing what makes him think I wanna have a 3some with his exes???????to me if u miss sleeping with the bitch u miss having sex with her too is this why the 3some......men think they're slick!!!!!!!!!!! He says he don't want us to end because he love me more then I'll ever know.......I been at my mom's house with our kids until I can find somewhere else to go......ladies did I blow this out of proportion???????or did I do the right thing by leaving???????he cheats before and I gave him CHANCES....I mean I'm not about to look dumb the rest of my life with someone who's missing an ex?????