Tom Cruise is “growing closer” to Russian socialite Elsina Khayrova, 36, with sources sharing the two have made their relationship official, RadarOnline.com has learned. The 61-year-old movie actor was first linked to much younger Khayrova in December after they were “inseparable” on the dance floor at a party in London’s Mayfair. Now, insiders shared Cruise has taken his relationship with the divorcée to the next level. “It’s well known within Elsina’s circle that she and Tom are now an item,” a source told Daily Mail. “They’ve grown very close over the past few weeks but take a lot of care n…