Found dating apps on his phone. He's already cheated.

He cheated on me in June, I confronted him about it and he keeps saying it's a convo we need to have in person then avoids it all together. I just found out. In AUG He begged me to quit my job and stay at home, so he supports me financially, and I am the full time caretaker for HIS two kids, whom I love whole heartly. It's hard to leave, because I love him and them so. But I'm also stuck financially as well. I don't know what to do. I trusted him. Please. Words of wisdom... Prayers. Anything. 😢