Selena Gomez and Ryan Seacrest have got Hollywood buzzing with rumours and hopes that the pair are dating. Fans went wild when the Live with Kelly & Ryan host, 46, posted a picture and message on Instagram alongside the singer, 29.MORE: Selena Gomez sunbathes in a retro bikini for poolside photo at LA home Ryan was wishing Selena a happy birthday and added a gushing caption: "Celebrating the rarest of them all," he said.