Depressed and frustrated

Laying in bed with my partner, I can read the signs that she is in the mood for some fun, I’ve had the same thoughts all week, the ideas and wants of things I want to do to her is overwhelming , I look down and all I see is a very soft limp cock where there used to be a rock hard throbbing cock, where had it gone , my thoughts of sex have not diminished and still see her as a sexy sexual lady. She rolls on her side and reaches out and strokes my softness, as the reaction is mute to her touch she leans in and kisses my cheek saying it okay I still love you, but the thing is I hate myself, feel so helpless I can’t give the one thing she really want.