Turn your back on Mark Ballas for two minutes and there are new rumors about his love life. According to In Touch, Mark and his girlfriend — singer/dancer/choreographer Tiffany Dunn — recently split up. Mark is said to be "upset about it," but he's been pouring himself into his work with Bristol Palin on DWTS Season 15 All-Stars.

However, someone at Tao Nightclub in Vegas on September 20 allegedly spotted Mark dancing and making out with So You Think You Can Dance winner Eliana Girard. A Vegas hookup doesn't equal dating, but you never know. Mark does tend to go for ladies in the entertainment industry. He previously dated American Idol stars Pia Toscano and Joanna Pacitti, not to mention DWTS All-Star Sabrina Bryan and another SYTYCD winner, Jeanine Mason.

Whoever he is or isn’t dating, Mark is still best friends with fellow DWTS pro Derek Hough and they were spotted Friday night at the Hollywood club Bootsy Bellows, which is owned by DWTS Season 13 alum David Arquette. Socialite Life has photos of the handsome lads leaving the club after a guys’ night out.

Derek recently dismissed rumors that he’s dating Mark’s Season 14 partner Katherine Jenkins (who will perform on this week’s Results Show.) So it’s possible both pros are single right now. You know what they say, bros before … ladies!

Catch a new episode of Dancing With the Stars Season 15: All-Stars on Monday, October 1 at 8 p.m. ET/PT on ABC.

Sources: In Touch, Socialite Life

Gina Carbone is a contributing writer at Wetpaint Entertainment. Follow her on Twitter @ginacarbone.

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