I don't know what a "baby daddy" is either.

Regardless, is social media a very important of your social life? So many people get hurt, hurt others, gameplay, etc on social media. I think it has positive aspects to it such as keeping in contact with family and friends especially if long distance. But I think things have crossed a negative line here with you and your ex. You are obsessing about him and he's trying to fuel your insecurities by saying you could look better. I don't think it's healthy for you.