My boyfriend has a lot of female friends. is this a red flag?(pls read details)?

i have been with my boyfriend for a few months now (we are in college) and he has a lot of female friends, which didn’t bother me at first. what truly bothers me is that when i hang out with him and his female friends he jokes around with them (inside jokes) talks to them a lot and mentions things that they have all done together and i just feel a little left out. I mean he does show me affection when we are all together, but i almost wish he acted that way with me like too like the joking around and talking about times together. is this a red flag? am i wrong for feeling this way?
My boyfriend has a lot of female friends. is this a red flag?(pls read details)?
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