Is my boyfriend cheating on me with a girl on snapchat?

me and my boyfriend got into a fight a couple days ago and it was pretty bad we almost broke up but we worked it out, but yesterday i looked at his snapchat and he's been snapchatting a girl.. i asked him about it and he told me that an hour after our fight she followed him on instagram and she asked for his snapchat which i think he shouldn't have gave it to her but anyways he said they went to school together and they were just caughting up but on his bestfriends her name was above mine... im still upset about this, and today i followed her on instagram and she told him that i followed her and he asked why i needed to, and i said because i wanted to see what she looks like and then i said if she didn't want me to follow her she couldnt declined it not go to MY boyfriend and tell him. He said they are homies but how can you be when you just started talk a few days ago... if she goes to him about me following her what else does she go to him for? i just wanna know from a guy if i should be worried about it or if im being cheated on... i love this guy, and i just dont know what they say to eachother and i feel like something is going on with them... i dont want them talking but i told him that it would be a problem... someone please answer me... :(
Updates
+1 y
@klaatu51 no i dont know what they talk about.
Updates
+1 y
@Just1n123 no im not overreacting. i dont care that he has friends that are girls but how is it all the sudden he wants to tell me they are "homies" when the haven't talked since school and he's graduated.
Is my boyfriend cheating on me with a girl on snapchat?
Post Opinion