NEVER. a secure man does not get upset when you don't climax. i was with my then Master for hours and He came seven times and i didn't cum once...i think i was climaxing in my mind over the nipple clamping, bondage, etc... i got in this mode that i was there to be used for His pleasure, i guess, and didn't cum, although i had other times, a couple of times just kissing him with cloverleaf clamps on, and i have no trouble climaxing...anyway He was not upset at all, although He did play with me to try to make me cum. i think He would have been upset if i had faked it. i wouldn't do that to any man because i feel it is dishonest and disrespectful. that is just my opinion.