Advice please!

I’ve been married for 2 years now but in all I’ve been with my husband for 3 years. The first year we met he said he didn’t like how I was texting my guy friends so I stopped talking to them, I told him I didn’t like how he was always liking his ex’s post so he ended up blocking her. Well a few months after he unlocked her I don’t even know why. Also his ex created another Facebook and added him and me so she would pass as another person but at the end I found out it was her, he didn’t know but then she admitted that it was her and she now uses that account, he has her as friend on Facebook and he likes everything she post.

A few weeks ago I found out he made another Instagram but he didn’t follow, till this day I act like I don’t know about that account. He follows her and likes every single shit she posts and she likes his pictures. Now, hes following from one account and on that account he doesn’t follow her (maybe because I’ll see it?) but he never followed me from the other on that account he follows her. So now I don’t know what to do, We have a 2 months old and tbh it makes me mad but I don’t know if I’m being crazy or if I should tell him please help