Confused

Mel
I am not the kind of person who posts things, but I read a lot of the issues on here & I find the advice you all give really helpful. So here it goes... Been married about 10 years. Have 3 amazing kids. Husband travels more than half the year. I have been suspicious before of cheating but never really believed he would do that to me. Still don't have proof he ever has. He's had 2 incidences pop up in the last 3 years. One ex texting in the middle of the night .. I got livid , but somehow he talked me out of thinking it was a big deal. About a year later he's texting a chick he met on a trip but saved her number as a friends name so I wouldn't question. I figured it out & kicked him out but again let him back. This last month I find out from my sister ( wait for it ) that after I went to bed one night he starts sexting her. They both were drinking but he asks her "can I call so you can hear me cum"... I kicked him out. AGAIN. For 3 weeks. Went to a lawyer and I'm all set to seperate but now I don't know what to do. I hate the idea of my kids not having their dad, hate the thought of struggling with no money, he says he's sorry & will do anything... I just don't know how bad this is & would love outside opinions. What is better for my kids. That's what I want to do. And honestly for some fucking reason I still care about him. Help?