The hottest and the most desired heartthrob on men's court at Roland Garros 2014 is none other than Grigor Dimitrov. At this year's French Open, the player is set to start with a game against Ivo Karlovi, but the game that Grigor Dimitrov should be really worried about is with the hearts of Maria Sharapova and Serena Williams. Just last year, the two top-ten tennis players were bickering over "the guy with a black heart", presumably Grigor Dimitrov, at a press conference. This year's Roland Garros is also a reunion of Maria Sharapova, Serena Williams and Grigor Dimitrov. Let the sparks fly!

Grigor Dimitrov definitely has a lot going for him. The 23-year-old charmer is not only good looking, but also talked about as the next Roger Federer. Holy cow, that's high praise. The current number 12 in the world was also named last week as the number five in SportsPro's list of the world most marketable athletes. He has the hots, the talents and the personality. And Maria Sharapova and Serena Williams both know that he is tennis' most eligible bachelor.

But it looks like Maria Sharapova is ahead of the game! She shared a selfie with Grigor Dimitrov after their matches at the Madrid Open just last month:

No,you did it! #Madrid #selfie pic.twitter.com/sOnnZ2TASY

— Grigor Dimitrov (@GrigorDimitrov) April 28, 2014

It seems like Maria and Grigor's playful relationship has been around for sometime! Check out Grigor inimtating Maria Sharapova in this video:

On the court though, Serena Williams is off to a great start at Roland Garros 2014 with an easy win over a wild card player with 6-2, 6-1, looking to defend her French Open title. And there's the fact that Serena Williams has always defeated Maria Sharapova on court for the past nine years. Ouch.

With the matters of the heart though, things are always a little bit more complicated. Serena Williams said during the press conference, "And hey, if she wants to be with the guy with a black heart [Dimitrov], go for it." Sounds a little bitter and defensive. To that, Maria Sharapova answered:

"If Serena wants to talk about something personal, she should talk about her relationship and her boyfriend who was married, who is getting a divorce and who has kids - and not draw attention to other things."

Another ouch. But then again, these two are notorious for their rivalry on court. It was only a matter of time that aggression spilled into their real lives outside the realms of tennis. This year's French Open has got to be interesting with all three of them fighting for titles. We'll see which one (or two!) emerges as the winner.