So, you're tired of sucking his cock...

Yeah, pretty much. Not what we agreed to. But if he wants to change the rules he's free to do that. He'll also be free, too.

I'm pretty secure knowing that he likes the rules the way they are.
 
If he did it behind my back I'd have a huge issue with it.

He doesn't have to hide anything from me though.

If you don't think you can tell her, or if you'd be upset if the roles were reversed, maybe just don't.

My guy has things he won't let me do with him and I really wish he wanted to. But he doesn't, so I just let it be.