stuck

so recently i have noticed that my partner has been liking a lot of ass videos & body videos on tic toc, then i noticed he downloaded snapchat again where he follows girls premium snaps & he recently added another girls snap. am i childish to be upset? i made him delete snapchat and he made a comment saying how i am controlling. but how? i feel insecure that he looks & likes other girls that don't look like me. i cant help but feel upset, i have caught him many times chating with females so if there's an opportunity i feel like he will take it.

if he doesn't wanna be with me i don't understand why he doesn't end this relationship....