Feeling disrespected

So I got a call from my bfs friend and we were talking for a minute then she jokingly says “yeah Brent said you were supposed to get him food when you got home but instead you let him and the kids starve”

I’m like ?? It’s not even dinner time. I never said I was bringing food. I always cook dinner. It feels like he’s just always talking trash about me. When i used to look through his phone (I haven’t in like a year) he’d always text his friend group “finally got laid” or “it’s been so long since we had sex”

Like why do they need to know this??

He also once told them that I argue for no reason and he’s going to record me next time so they can see.

I’m just tired of them knowing everything. Lies and all..