jealousy

A few months ago I got on my mans sc and saw some messages from some girl and one of them sent him a pic of her in a dress showing a lot of clevage and one of the girls that had messaged him was a girls he had sex with when I saw that I got so furious and started yelling at him and whatever then we fixed things and what not Idk if I'm too jealous or what but I hate when girls hit up my man on social media! Like I get furious when a girl comments under his status or whatever, he deleted every girl on sc but changed to where everyone can see his stuff and I've talked to him about it and he even changed his password and I asked him about it and said bc I always snoop through his phone and that I don't trust him. Idk how to stop being so jealous, any advice?