Selena Gomez and Niall Horan smiled broadly for a photo in London today (Feb. 16), sending Directioners and Selenators into a frenzy and prompting "Niall and Selena" to trend worldwide on Twitter.

The One Direction member, who recently split with GF Barbara Palvin, posed with Gomez and several fans in a snap that has instantly circulated throughout social media and has, of course, sparked rumors that the two are an item.

Gomez, for her part, Instagrammed a picture of herself arriving in London yesterday, Feb. 15, lying next to the airport Starbucks. The singer, who completed a short stint in rehab earlier this year, captioned the shot, "Jet lagged."

Only time will tell if Gomez and Horan are just friends or something more, but rumor has it the 1D singer is the reason Justin Bieber's ex hopped across the pond. Check out the picture of the singers below. (No explanation for the Photoshopped cat face.)