Unfortunately, a lot of women still have negative feelings of shame and guilt surrounding sex, and orgasms. Method to get you there. And lastly, i disagree with the statement that everyone should invest in expensive vibes. Never let her know, use it as a tool to build her levels of anticipation and excitement.
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When she is aroused this increases in size and volume making it slightly easier to find. If you are in a position that makes it easy, you can use it on his balls, perineum (. Man, do i ever wish i could have found all this information in one place when i started learning this stuff.