Orgasms and boyfriend

I am not sure what needs to be done for me to orgasm. I’ve had sex 6 times and only know for sure I’ve orgasmed once (but honestly don’t know if or when Bc I’m always really wet around him). I don’t know what to do either Bc each time he asks if I’m close and I don’t think so... and he gets so discouraged and thinks it’s him. But it still feels sooo good.

What should I do?