Valen-tiny Idea Night: Yerba Buena Center for the Arts hosts a night of "mingling, mating, and music," featuring live performances, dancing, and lots of art and activities, including postmodern elevator peepshows and Infatuated, an interactive cell phone game of love for couples or singles, who must solve the mysteries of love in the 21st century.

St. Valentine Sweetie Pie and Art Fest: SFist informed you of the radical Pie Extremist group earlier this week -- head over to their fest at 111 Minna on Saturday night and share your pie baking/buying/eating skills with others. Bring pie some pie or cake to eat!

The Exploratorium: There are all kinds of fun date-centric activities going down at the Exploratorium on Saturday. Check out the Heat Camera, dissect a heart, send the kids to the museum for a Date Night Out, and much more.

Woo at the Zoo: So this one might veer toward the cheesy side, but it sounds pretty cute, if you like zoos. Tap into your primal instincts over a romantic brunch or a cozy dinner at the zoo while learning some wild animal factoids, new positions and kinky information -- "literally the ins & outs and ups & downs of animal mating from all animals A to Z including U."

The End of Love as We Know It: Perhaps you'd like a more low-key Saturday night. How about a line-up of quirky short indie films that explore "the ineffability of love in contemporary society and what it is bound to become in the future"? If worse came to worst, you could always relive your youth and make out in the theater.