Reluctantly

"Babe, I really would, I just feel so uncomfortable with all this... I'm the one used to having the dick, and this is so wrong." you say to her, trying to defuse things

Sam continues crying. "Mark, that's the thing. I know you don't like having a pussy, but I need help with this and you're the only one who can. Besides, you're basically the girlfriend now..."

You snap at her. "I'm not a girl! Don't call me that, and just because I have this doesn't mean you can pressure me into this.

"You at least owe me for all the times I wasn't in the mood" she says, gaining some measure of composure, dick still rock hard in front of you.

You realize she is not going to give this up. "Fine babe, I'll help you but please don't make it out to be more than it is. Should I give you a handjob then?"

She looks up at you, somewhat happier. "Hands don't work..."