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Get hands-on

Locking fingers with your sweetie is, well, sweet—but can it make you hot and bothered? Absolutely. “Even little acts of touching your partner release oxytocin, a hormone that may boost closeness and arousal,” Dr. Goldstein says.

The trick is to be spontaneous, he adds. That out-of-the-blue excitement is what prompts your body to pump out oxytocin and other neurotransmitters related to sexual response, so choose unexpected times to get a little grabby.

Next: See (him in) red