Cheating?

So, to begin, he and I haven't been doing too well. We argued recently about me being distant. I have been as attentive as possible. we live together. we talk about work when I pick him up or when I get home from work. we watch TV together, we cuddle the whole time, I take him anywhere he needs to go (he has vision problems and can't get a license). we got into an argument about me being distant, but his only evidence of this was me being uninterested in sex when we were having it, but his breath smelled bad and that's why. I didn't know what to say. we kept arguing, and I didn't want to hurt his feelings, but I eventually had to tell him that's why because he was making a huge deal or if it and saying he was losing me. I just wanted to tell him the truth, so he'd stop feeling like we were falling apart. he was so hurt, and he broke up with me over it. he said he couldn't be with someone who was so mean. but he didn't mean it. he took it back. begged for be back because I started packing and it made it real. he's broken up with me before that, because we got comfortable together and just weren't in the honeymoon period anymore. it just happens when you've been living together awhile. but I told him that I couldn't handle an on again off again relationship, so I wouldn't take him back the next time. but I did. now, the present. he downloaded OK Cupid and made up a persona and started taking to women in there. he downloaded the sideline app to text them. he was flirting, lost of smiley faces and good morning/goodnight texts, he got pictures from all of these women "for their contact" in his phone (no nudes). there were three of them. I confronted him about this, and he acted like he didn't know what I was talking about at first, and then completely broke down to the point that I had to put my feelings aside and comfort him because he was so inconsolable about losing me and making the worst mistake in his life. would you consider this cheating??? they only texted

edit: I could've come across as mean when I told him his breath smelled, but he'd been going around in circles about it for over an hour so I just blurted it out. I didn't think it was mean at the time, but he had a complete breakdown.

also, back in October, I hit a drunk pedestrian with my car at 40 miles at hour (he was okay) and I had panic attacks while driving at night and was distant from him for awhile, so there's that going on, too, which probably has a lot to do with him thinking I'm distant, but that doesn't excuse what he did

there's a lot going on