Orgasm

Ok so I’ve have decided with two different people and I want to have sex with my boyfriend but I’m scared that I won’t be able to orgasm because I’ve never cum before when having sex but I have been close. Is it just the person or am I doing something wrong?

Any tips?

I’m 15 btw and he’s 16 I’ve had sex 7 times and idk how many times he’s had sex