My husband recently got caught messaging an ex.

Recently my husbands feed started popping up on my iPad. He was talking to one of his ex. I immediately tried to log in as him and I couldn't cause he changed his password. So I called him a confronted him asking why is he talking to her?! He said it doesn't matter I said are you leaving me for her he said it doesn't matter I don't care anymore I responded what is that supposed to mean he said I'm not in love with you anymore but I love you we got home and argued forever he threatened to leave blah blah blah he's still home today the next day but refused to let me see his phone even plugged his phone up to chargein His truck to charge and locked it when he took a shower I wrote the girl telling her not to talk to my husband she only responded with no problem what do I do I don't want a divorce but this way past bothersome it's breaking my heart