Need advice

Angel

Hi ladies I need some advice I recently come across a comment from a woman claiming she and my husband were supposed to be talking I didn’t think much about it as i thought it was just a joke but then I found comments on her pictures from him saying that he liked the way her body looks and she’s got a fat ass and that they should go out to eat or to the mall or just hang out one day... when I read it I felt so betrayed and felt that he was stepping out on me and his explanation was because it was just a mistake and he was being dumb but I just don’t know what to think... FYI we just celebrated our 1 year anniversary and I made a post tagging him in it and that was the post she commented on