PROBLEM!!!

Okay so ive been having sex for about 2yrs but I've never had a vaginal orgasm. I can make myself cum with my clit but my ex has never been able to make me cum. I still feel satisfied having sex, but my ex felt bad when hes the only one that cums in the end so I ended up faking it until he understood the fact that I didn't need to cum to feel satisfied. in the end I still want to know what it feels like though.

I've tried almost everything from different masturbation techniques, toys, and Kama sutra stuff but nothing works. everyone says that cumming from your vagina is different from cumming with your clit and you'll KNOW the difference when it happens, buuttt I just can't get there. Any tips or advice ladies?