So, speaking of straight guys...

[suckpoppet]

If there is one single piece of advice I would give lovers, here it is and please take this seriously.
You don't say no. Not ever.
Too tired, headache, backache, arseache, there is no excuse. Got work to do, fuck work , this is more important.
A good man is worth more than all the money in the world. Always give him what he wants.

This is a perfect example of sex being both overrated and underrated. "Underrated" in that it consumes many people for a big part of their lives especially when that sex drive peaks (gay men seem to be more compatible in that regard).
"Overrated" as in "as long as it doesn't seriously hurt you it is always OK to have sex regardless of how you feel about it at any particular time"
Lemme tell you, there's nothing more repulsive than doing the sex you don't want to do. It's the kind of sex you didn't know existed until it happens.

The idea that a woman doesn't even have to "do" anything and only hope that it'll be over as soon as possible doesn't change that if it feels wrong for her at that time. And if that happens too often than sex can become an enemy. How is that going to save the relationship?
On a more personal note, I have sucked cocks I didn't want to suck and just the memory of it still makes me gag, my reputation of biggest slutcumwhore in Sucksville notwithstanding.