Credit: Angela Weiss/Getty Photo: Mark Ballas at the Dance For The Cure Of Prostate Cancer

Dancing with the Stars pro Mark Ballas is so gosh darn adorable, it’s no wonder we’re ever-so-slightly obsessed with his dating life.

He’s dated a bevvy of beauties over the years, from childhood friend/fellow DWTS pro Julianne Hough — also the sister of his best friend, DWTS pro Derek Hough — to his Season 5 partner, Cheetah Girl Sabrina Bryan.

In 2009, Mark seemed to be in love with girlfriend Joanna Pacitti, 26, of American Idol Season 8. He told E! News that she was “definitely the one.” But in April 2010 he told E!, "We're no longer together. I'm back on the market. It just wasn't working out. I'm 23, she's 25. I don't know. It just didn't work out."

Although some people have said Mark, now 24, and Bristol Palin, 20, made a cute couple on DWTS Season 11, Mark put a nail on the coffin of those rumors.

This past October, Mark and So You Think You Can Dance Season 5 winner Jeanine Mason were spotted by TMZ coming out of a first-date dinner. "How'd you know I was here?" Mark joked with the paparazzi before talking very briefly about his now 20-year-old date, Jeanine. Did things go well with the two of them? "Maybe, maybe," Mark replied.

In November, Jeanine and Mark danced together to John Legend's "Ordinary People" on a DWTS Season 11 Results Show.

And over the past year or so there have been rumors that the friendship between Mark and fellow DWTS pro — and SYTYCD alum — Chelsie Hightower, 21, is more than friendship.

In writing about Jake Pavelka’s tearful goodbye on DWTS Season 10, Reality Tea said, "And despite [Jake] calling his partner Chelsie his best friend last night, the two immediately parted ways after cameras stopped rolling. Chelsie however reportedly got a 'long' hug and 'sweet kiss on the cheek' from her new beau Mark Ballas." Musician Mark also dedicated a song “to a very special person," Chelsie while performing a solo stint at The Mint in LA last April. “He gave me a shout-out because we’re close friends,” she told OK!.

Mark and Chelsie often dance together at events, including last month at Mohegan Sun. (Watch their cute video below.)

Recently, Mark tweeted about going “home” to London for the first time in four years. Chelsie tweeted about coming back from London around the same time. Did they go together? Are we stalkers for asking?

UPDATE:

But these days it seems as though location is everything for Mark's love life. He has been spotted getting cozy with American Idol contestant Pia Toscano after meeting on the studio lot where both of their reality competition shows film. Apparently, Dancing With the Stars' Chris Jericho is to thank for their budding relationship. However, while Pia has absolutely gushed about Mark as a person, she says they went out as friends, and Mark continues to state that he is not dating anyone.

Credit: Mohegan Sun Pocono via YouTube Photo: Mark Ballas and Chelsie Hightower Together at Mohegan Sun