My man accused me of messing off

Me and hubby.We got into an argument last about something that was minor pretty much over a big misunderstanding which is okay, couples argue over stuff like that. So this is where it got confusing because the argument wasn’t even about cheating or anything pertaining to infidelity. After we argued about the situation he randomly burst out “if you’re going to mess off then go ahead, I’m like huh he said I seen that video you sent that guy about married women being friends with single males” so I’m really confused, like why would I send a video to another male am I trying to be friends with. I only have 3 male friends who he knows about. Y’all he went through my phone and saw a video I sent to one of my old college friends on instagram who not only he knows about but the guy is married and have children as well. Hint on 1/3 male friends I have hubby never personally met John because he moved out the city but I’m literally like you know who he is I’ve talked about him for years him and his family and how I wish they met because I feel like they would get along. I asked him why did he go through my phone and asked was he suspicious of me doing something? He said yes, so I asked him why was he suspicious what reasons have I gave him? He couldn’t answer me… it’s like sir what?

Edit: I wish I knew how to post video but the video is basically talking about how single men and married women shouldn’t be friends. Also me and the guy never ever had any type of sexual relationships, I’ve talked to my husband about him multiple times because Johnny and his wife both want to do double dates when they do come in town and I’ve told my husband about it. The last time I spoke to Johnny was around Jan that was because I commented on facebook post telling him congrats on the new baby and he asked about hubby and our dog.