"What's your sign, baby?" It's a pickup line as old as the hills, but it hints at the sexual compatibility between astrological signs. In this highly technological time, when there's a niche dating site for just about every possible fixation and fancy, it can be tempting to go back to basics — namely, return to the idea that specific signs have particular characteristics associated with them. For the sketchy guy at the bar, this meant waxing annoying poetic about the certainty of a love connection between, like, Aquarius and Gemini. Because you said you were a Gemini and he, of course, was an Aquarius. (For what it's worth, Aquarius and Gemini are supposed to be good love matches.)

But these days, of course, there's an app for that. Align uses your astrological sign to determine whether you are compatible with another human being. Instead of matching people based on profile pics (and all of the pesky swiping that comes along with that), Align matches folks simply by virtue of whether their signs play well together. I suppose you could say every match on Align has the potential to have been made in heaven. Sorry, I couldn't resist.

Anyway, founders of Align (and BFFs) Aliza Kelly Faragher and Helen Grossman shared the best sex position for each sign with Bustle, which should make for an interesting experiment — and a most interesting night. Perhaps "what's your sign?" isn't such a bad question after all.

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Aries (March 21-April 19): From Behind

Why: "Aries love winning, and this eye-on-the-prize position is no exception. Doggy style allows energetic Aries to really focus on completing the task at hand, and to show off raw passion with this carnal kink." — Aliza Kelly Faragher

Taurus (April 20-May 20): Missionary, Over And Over, With Food Products

Why: "Taurus, ruled by the planet of love and money, Venus, is the most sensual sign of the astrological wheel. Couple that with the endurance of the sign’s symbol, the bull, and you get the idea of where this kind of lover is taking you. Tauruses set the mood with candles, rose petals, a silk robe, and/or fine wine — anything that will get your senses going. Their stamina makes for some all-night-into-morning-into-night-again sexy escapades. Why stop for a meal when you can eat it off each others’ bodies?" — Helen Grossman

Gemini (May 21-June 21): Threesome

Why: "Some say that every time you get in to bed with a Gemini, it's like having a threesome, but for those who are willing to explore this sexy triad, Gemini would surely be up for the challenge. Their frenetic energy makes it very easy for these air signs to move from ... err ... one thing to the next, and between their charming demeanor and natural way with words, you could definitely expect a memorable night." — Aliza Kelly Faragher

Cancer (June 22-July 22): Spooning

Why: "Cancers express love through being extremely nurturing. Though it may take a hot sec for the crab to show his or her deeply sensitive emotional side, once you’re in they’ll never forget your likes/dislikes and proclivities. Cancer values their privacy, so make them feel secure with intimate spooning sex." — Helen Grossman

Leo (July 23-August 22): Hotel Sex

Why: "For these rulers, sex is not just about the act; it's about the atmosphere. Treat your freaky feline to a night at an extravagant hotel. Make sure the champagne is flowing and the robes are fluffed, and get ready for your Leo partner to feel like the king or queen they know they are." — Aliza Kelly Faragher

Virgo (August 23-September 22): Sexting

Why: "Don’t judge a book by its cover, and definitely don’t judge a sweet Virgo by its symbol, the Virgin. Virgos do need to take it slow and establish trust, which is why it’s good to heighten the tension with sexting. No one can master the turn of the phrase like dear Virgo, but be forewarned that they do expect you can meet them at their level. The build up makes it so worth it. Just make sure you’re all proper when it is time for IRL sexiness with perfectionist Virgo. They’re counting all of your missteps." — Helen Grossman

Libra (September 23-October 22): 69

Why: "This air sign is all about keeping things fair and balanced, and what better way to ensure a returned favor with some good ol' fashioned 69-ing? Libra is ruled by Venus — the planet most directly associated with love and romance — so your Libra partner is sure to shine in this symmetrical posture." — Aliza Kelly Faragher

Scorpio (October 23-November 21): Kink

Why: "The best way to describe a Scorpio is 'passionate.' Everything is an all-or-nothing experience for them. If Scorpio decides she is just trying to hit it and quit it, she’ll still have the most passionate, pleasurable sex you can imagine, but then you’ll never hear from her again. I’ve talked to Scorpios before who, when describing disappointing sexual interactions, attribute their disappointment to 'not being so sexy and passionate that we wept in each others’ arms.' Damn. When her mind is made up, it’s unwavering. Scorpios are interested in power dynamics, which is why kinky role playing will get them all turned on. Just remember they go all-in, so get your safe word ready. You're in for the ride of your life." — Helen Grossman

Sagittarius (November 22-December 21): Public Sex

Why: "These chatty fire signs are all about adventure, and sex is no exception. Lead your Sag lover to a window during foreplay, or get all Titanic-sex-scene in a parked car, and this archer will be shooting arrows faster than you can spell 'Sagittarius.'" — Aliza Kelly Faragher

Capricorn (December 22-January 19): Slow submission

Why: "If you've been looking for your very own Christian Grey, a Capricorn lover may be just the way to go. Capricorns are the hardest-working sign of the zodiac, and when it comes to sex, these steadfast earth signs play the long game. That's right, cosmic lovers, Capricorns are all about the power play and building a sexual dynamic that gets more passionate, steamy, and kinky with time." — Aliza Kelly Faragher

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Aquarius (January 20-February 18): Cowgirl

Why: "Aquarians don’t like to be put in a box. They are spontaneous and fun-loving, so shake things up with a little cowgirl action, lasso and all. Because Aquarius has an innate ability to relate to all kinds of people, role-playing is an easy, super sexy position for them." — Helen Grossman

Pisces (February 19-March 20): Oral

Why: "Pisces are the ultimate givers, in every sense of the word. They are known for their self sacrifice, and that extends to sexytime as well. Be sure to return the favor; these sensual dreamers deserve some time to sit back, relax, and let their fantasies take over." — Helen Grossman

Want more predictions for your sign? We talked to famed astrologer Susan Miller on Bustle's The Chat Room. Listen here for your 2016 forecast:

Images: Lies Thru a Lens/Flickr; WiffleGif (12)