Having a hard time reaching the Big O

Heather

my husband and I have GREAT sex regularly. i dont always reach climax but i still enjoy it and it feels good so i just fake it to make him feel better. he doesnt know i do this because i dont want him to feel hurt. so lately i have found that i cant orgasm through penetration anymore. the only way i can cum is through clitoral stimulation. so while having intercourse while hes doing his thing I'll "help" him by stimulating myself while hes inside me. he seemed to like it.... at first but last night we were in the middle of the deed and he stops and says "do i not do it for you anymore? you always have to help" i felt so mortified. of course im attracted to him still, he turns me on just by looking at me a certain way! so i lied. i didnt want to hurt his feelings by telling him that i cant remember the last time hes given me an orgasm through actual sex. hes great with his fingers or a vibrator. and like i said i enjoy the sex itself. i just cant cum. what do i do?? is it me? is it him?? have i just gotten into my own head??what's wrong with me??