THE BIG O

My boyfriend and I are getting really frustrated, we have AMAZING sex. Like I feel so good during it and so does he. We change positions lots and he also stimulates my clit. But I just cannot orgasm! I have before but haven’t in about 4 months and it’s getting him down as well because he thinks it’s his fault, but I feel so aroused when we have sex.

Why can’t I orgasm?! Help 😬