It's not all Valentine's Day this weekend — but it's mostly Valentine's Day.TALKSVictorians After Dark: Love and Lust in the 19th CenturyThursday, 6:30 p.m.Laurel Hill Cemetery3822 Ridge Ave.$20, 215-228-8200www.laurel-hill-cemetery.mybigcommerce.comIf you want to add a gothic twist to your Valentine’s, try this talk. It’ll be filled with tales of romance (and romantic scandal) from the supposedly prudish Victorian era. There’s even, we’re told, a sexting scandal of sorts. The storytelling takes places before a fire promised to be roaring, with a dessert and cocktail reception afterwards.MOVIES‘Let the Right One In’Friday and SaturdayRoxy Theater2023 Sansom St.$9-$10, 267-239-2941www.filmadelphia.orgPhiladelphia Film Society screens this creepy 2008 Swedish horror-romance, whose weird yet potent mix of young love and murder speaks to the confusion of adolescence, when you’re caught between a vanishing childhood and an adulthood that’s not quite arrived yet. It would be a curse indeed to be stuck forever as a 13 year old, as the vampire heroine Eli is — so awkward!CLASSESThe Art of the FlirtFriday, 6 p.m.Square One Coffee249 S. 13th St.Free, 215-758-6352artoftheflirtphillymatchmakingevent.eventbrite.comAll alone this Valentine’s? Maybe you’ll fare better next year after these tips on wooing a would-be lover from local relationship coach and matchmaking expert Kristi Price. Pro tip, though: don’t tell your potential mate that you attended the class. Play it cool! If you want to attend, you’ll have to register online at the address above.MUSICFrom PhilaHarmonia, with Love: Serenading the SensesSaturday, 7:30 p.m.Fleisher Art Memorial719 Catharine St.$22-$60, 800-838-3006www.philaharmoniasings.comPhilHarmonia presents an a cappella Valentine’s-themed concert, promising a program of works ranging from Monteverdi to the Who. That’s pretty comprehensive! But sound isn’t the only sense to be serenaded, so there’s also a chocolate tasting from Teuscher chocolates, and for the eyes, there’s the venue itself, a glorious late 19th century Romanesque revival church.DANCEBlack GraceThursday through SaturdayAnnenberg Center3680 Walnut St.$20-$60, 215-898-3900www.annenbergcenter.orgBlack Grace is a dance ensemble from New Zealand that brings together the diverse indigenous traditions of the South Pacific and mixes it with hip-hop, modern dance to create an deeply physical, narrative dance experience, informed in part by some of the members’ former lives as athletes. They’ll perform five pieces: “Minoi,” “Pati Pati,” “Mother Mother,” “Method” and “Gathering Clouds.”