he's too friendly with other girls..

Im very “overprotective" over my boyfriend.. He's a very outgoing, polite, funny guy😍 very outgoing.. so he has friends that are girls.. 🙄 ik i guys deserve to have their freedom, but he's too playful withother girls .. especially the ones who he calls his “daughters" (we have our own made up family at school)...  i dont wanna sound that a bitch or psycho talking to him about it, but i have before and it didnt really seem to get it through his head.. im a very self conscious girl and overthink sometimes. how should i deal with this? What can i do to not make it bother me as much?