I can tell when she had an orgasm. It's a fool-proof method that everyone can learn. After we have sex I say, "did you cum?" and if she says "Yes" I know that she had one. If she says, "No" then I know that she didn't.
If she says no then I'll figure out if it was performance related or she just wasn't up for it. My girlfriend doesn't fake it because there's no reason to.
Also, when she cums she ejaculates a little- pretty much a no-brainer.
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The trouble with the rat race is that even if you win you're still a rat
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