boyfriends family and his ex

I know I’m in my head too much but I already have low confidence and today I creeped on my bf’s ex... I know... I shouldnt. Upon doing that I saw all the comments from my boyfriend’s family (mom, dad, brothers, sisters) who have commented on his ex’s pictures and post. They always tell her how beautiful she is, etc. to be fair, theses comments were made before my boyfriend and I got together but while he was with his ex and even after they broke up.

It stings a little because they hardly ever do thay for me. They like my pictures but never go out of their way to give all the praise they gave this girl. Our relationship is okay, but they dont go out of their way to have more than a surface level conversation with me. My boyfriends dad is super standoffish so for him to join in and comment all this praise on my boyfriends ex, seems out of character. I cant help but feel like I dont compare to this girl, and thats why his parents dont show me the same affection. Or I feel like they rather him have ended up with her.

How do I move past this?