combination of sex ,masterbating and orgasm

so my girlfriend and i have sex quite a bit but then we have sex offten. i have a higher sex drive then her. when she is gone i masturbate but at the same time when im sad i do the same. she is like can go days after we have sex with out doing that. well she caught me doing it today next to her. i thought maybe it turn her on and it caught me off gaurd. so i lied to her at first but i also had giving her hints. then she got mad then it turned her on and she ate me out so good i. was screaming. i orgasmed also. here latley its to the loint i dont feel the orgasms eaither. she does but i dont. and like i dont know whats wrong with me. she is like you did it two or three times and then you get tight and dry. i feel like somthing is wrong with me. because i wish they were more intense. i never fake orgasms i dont believe in that shit. but im confused about whats wrong with me. like whats wrong with me i say i masterbate but i cant even get myself going ill try everything and its mia even when im horny. she is the only one who can get me going and tbe first to ever make me orgasm and scream. like when i do it its like i maybe i can't even get wet. so i give her props for turning me on and making me wet. because i cant even pleaseure myself anymore