What are some fun/kinky things to do with your partner?

Food play (sploshing) - including washing her off in the kitchen sink.

Mutual massage which may or may not get erotic

Prostate massage.

Why do you allow your cat to lie in bed with you?

Butt slapping as hard as they can take and enjoy.

Open her up with a speculum and see what's inside. Give her a mirror or take pictures for her.

Golden enema

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Outdoor sex under the real stars

“Rescue” sex - partner lets go and is about to do something dangerous but hold them back at the last second. This takes trust.

Hair play. (Cowgirl, brushing her long hair over his skin and face)

Weed may be bad for your heart, whether you smoke or consume edibles - Live Science

Sex club - watch, be watched or fully participate

Long distance hot video chat with mutual masturbation.

Short (5 minutes or less) quickies

What is truer than that which is true?

Try different sex positions - Read and go through the Kama Sutra.

Write your own sexy truth or dare card games.

Couples massage at a spa

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Sex with good friends but not lovers. Keeping the balance is tricky.

Take a sexy shower together. Soap makes pretty good anal lube and clean up is easy.

Scented massage oils

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Mood lighting. Try a sega Homestar planetarium projector

Take a sensual shower together. Rub your soapy body all over theirs.

Sex in public

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Sex on the beach

Meet other couples through a Lifestyle website.

Nude co-ed sauna. (Russian banya)

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Sex on a hard floor or rug rather than a soft bed

Candle wax play

Sex with other couples (or at least near them)

Why do some people hesitate to say 'I love you' even after their partners have said it first? How can one interpret this behavior from their loved ones?

Bite hard on a tough part of you partner's body, like their heel without breaking the skin. Endorphin rush

A sexy walk in the park at night, when nobody else is around

Find porn or erotica that you both like.

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Sex in a pool

Snowball - cum inside her vagina, go down on her and suck it out, and then kiss her and shove your own spunk in her mouth.

Fall asleep spooned up, coupled. Can you stay that way when you wake up?

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Temporary body paint

Anal play

Sex swing

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Sex on the dining room table

Hot tubs

Induce squirting with the right techniques.

Why do I have an itch in my labia, white gooey and thick discharge which doesn't have a smell but my vagina does sometimes and both me and my partner do not have STDs, what is it?

Pregnancy play. Ask a woman who's stopped menstruating but wishes she could have more kids whether she wants a boy or a girl just before cumming inside her.

Here is another list

Forced hydration. Drink water during sex until you lose bladder control.

NY retail worker safety law takes effect this week. Here’s what it does. - Gothamist

Golden shower

Mutual masturbation

Play sexy truth or dare card games.

Titty fuck

New lingerie

69

Long (hour or more) marathons

TENS unit - electro shock

Canibalism - eat a tiny piece of each other - typically a nip of you ass cheek. This may leave a small permanent mark, but it was in love.