am i wrong for this?

well, my boyfriend has a lot of "girl friends", girls make up the majority of his 'friends' on social media, and just in general. and at this point, i've just accepted it because no matter how uncomfortable i am about it, he doesn't listen. so i've just decided to shove it to the back of my mind. i don't retaliate, i think it is extremely immature...in any situation. though i decided to make a few guy friends of my own on snapchat, and i know where to draw the line if it gets too weird. i don't think adding guys is a crime, because i should be able to add the opposite sex just like he does. although the amount of guys i added is much smaller, i still think this should DEFINITELY be mutual. am i in the wrong??