Struggling to know what to do

So this may sound crazy, but i genuinely had no clue.

I use this app called Whisper. I was at work on break, and this conversation continued. My husband does night classes once a week, on Monday nights.

I was on the closer setting so I could see the ones closer to me. One of them said something along the lines of 'thought bringing you back into my life would fix it but now I'm fucked up even more' and I messaged them and I'm like wdym by that, you dont need someone else to fix stuff. And we really got to talking and this dude was talking about how he just wanted closure with his ex and that he didnt know what to do cause he still had feelings for her. So I'm like are you with someone? Why are you with someone if you've got feelings for your ex? And he said 'I'm with someone and I love her' and so I said 'then why entertain the thought of another girl, especially your ex? You've really gotta think about that, do you wanna be with your ex or your girl?' And it took him a while to respond, and when he did he said 'sorry I'm in class rn'

That struck me odd cause my husband, michael, was in class in that moment. But I was like you know whatever.

So Michael came home from school and we were in the bedroom, and he tilted his phone away from me and typed for a second, then he locked his phone and put it down. Then my phone went off. I thought it was a coincidence and brushed it off. I responded and put my phone away, then it went off again and he was putting his phone down.

So I think it's obvious that this user is my husband, and that I found out why he's been acting weird lately.

I want to tell him. But he tells me that sometimes I act crazy, and I dont want him to accuse me of doing it on purpose when I didn't. But anytime I'm like yo is there anything you wanna talk about cause marriages fail without communication and he just tells me no.

Ladies. What do I do???