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Challenge #19: Turn each other on in one of these unexpected ways.

Whether or not he's a novice driver, these tips will guide you toward the climactic finish line.

Simple ways he can call your bluff in bed.

Cheaters love chain restaurants. Find the spot that's best for you and your lover.

Challenge #18: Follow this map of erogenous zones for your partner's ultimate pleasure.

The Sinclair Institute's Dr. Lori Buckley explains the nature of sexual fantasy.