Absolutely not. I would never do that. I've never orgasmed with anybody except my current partner and I wasn't about to fake it with him or anybody. Why make them think they made you O if they didn't? That really hurts you not them. You're the one who doesn't have fun and their running around with a shit eating grin slapped on their face for a week thinking they're "the man," they made a girl moan! Ha Ha. I wouldn't do it with my partner and never ever have. It's not worth it. It's like lying and why would I fake it when he's happy to take time to please me even if it takes extra time? No way I'm missing out! Lol. Also, it'd be kind of... betraying in a way I would think. Not sure how men see it, but I would think they'd see it as betrayal if they truly take the time to please you and put such great effort in only for you to fake it. It's shorting yourself of an O and shorting him of getting to do something so intimate for/with you. No fun that way.