am I overreacting???

So I was in the phone with my S/O this morning and he was telling me how he was so tired because "someone " woke him at 2 in the morning. So me being me I ask him who was " someone " and he tells me it was Jolie his close friend. (Flashback) During the week I was on his phone and I saw he had a streak on Snapchat and it was with this so called Jolie. I asked him who it was and he told me she was like a sister to him . I questioned him about it later on and he told me that he had already told me about the girl , which I really cannot remember. (Flash forward) so today when he tells me that he was on the phone with his close female friend at 2 in the fucking morning, I was very upset. He told me call him last night but I had just come from work and I was exhausted, I told him I didn't want him talking to her , and it's not that I don't trust him because I do , but knowing him he wouldn't be so happy if I was talking to my close guy friends at 2 in the morning. I just want to know if I'm making things more than what there are or if I'm in the right for the way I'm taking this .