Help with orgasm

I’m 19 and i lost my virginity to my current boyfriend of 10 months. we’ve been having sex about 3 times a week or more for about 5 months, and i’ve never had an orgasm. i never make a big deal about it because the sex is always good, but i know he feels bad sometimes because he almost always finishes. i have never masturbated and it’s not something I’m really interested in, but i know that does make it more difficult to know what will help. does anyone have any tips or advice though?