Serena Williams recently sent supportive text messages to the United States Fed Cup team as she recovers from a back injury, leaving fans wondering if her coach and rumored boyfriend Patrick Mouratoglou is proud of her.

"She's been very supportive throughout the years," said U.S. captain Mary Joe Fernandez, according to Tennis.com.

"She was writing us during the matches, watching it live stream.

Serena Williams made a post on Twitter mentioning that she's not sure if her coach and rumored boyfriend Patrick Mouratoglou will want to hit with her again because she's "crazy intense" on the practice court.

The French tennis star will transfer his Academy of Yvelines to the Sophia Country Club Biot (Alpes-Maritimes), 20minutes.fr reports.

The move was motivated "by the need to change infrastructure" to form "tennis players profiles and levels," the website also reports.

Earlier this week, he said that he prepares his players by giving them inputs on the strengths and weaknesses of their adversaries, TennisEarth.com reports.

"Year after year, I have built my database with all the information that I consider decisive on every one of them. I use that information when I prepare my player before every match," he said, according to the site.

"More than knowing how the opponent is playing, my client needs to have clear information on strengths and weaknesses, the most-used combination of shots, patterns on the major points, where the opponent serves and where he returns on both first and second serve. Before every match, I set up a strategy taking into consideration, both my player's game, strengths, favourite combinations and the opponent's weaknesses. During the warm-up before the match we repeat as an actor repeats his play the partition we are going to play during the match."

The French tennis star made a post on Twitter about Anastasia Pavlyuchenkova defeating Maria Sharapova in a recent Open GDF Suez tennis match.

The Russian tennis player criticized Patrick Mouratoglou last year for dating Serena Williams while going through divorce paperwork.

"At the #gazdefranceopenparis to support @NastiaPav for her semifinals vs #sharapova"

Serena Williams was spotted grooving to a performance by British singer Estelle at a Dr. Dre Beats party for Superbowl Sunday, leaving many fans wondering if she was dancing with other men.

The American tennis star is rumored to be dating coach and rumored boyfriend Patrick Mouratoglou.