Serena Williams recently posted on Twitter that she gets "gitty every time" she runs into Dr. Dre, leaving many fans wondering if her coach and rumored boyfriend Patrick Mouratoglou is jealous over the remark.

Last week, Russian tennis star Maria Sharapova mentioned that her and Serena Williams "left a lot of what happened in London behind them."

Earlier this year, Maria Sharapova took a stab at Serena Williams' rumored relationship after she perceived an insult from her regarding her boyfriend Grigor Dimitrov.

 "If she wants to talk about something personal, maybe she should talk about her relationship and her boyfriend that was married and is getting a divorce and has kids," she said during an interview.

"She has so much in her life, many positives, and I think that's what it should be about."

But Serena Williams eventually apologized for her initial remark and the issue was largely forgotten about.

Patrick Mouratoglou told the New York Times in a recent interview that she "still has a margin for improvement that is enormous," giving insight into his longtime commitment to her career.

The French tennis legend also mentioned that Serena Williams is one of the best tennis players he has coached.

"Serena will never drop her guard. She will stop perhaps, but she won't drop her guard. She won't be 50th in the world, that's for sure. She wouldn't accept it from herself. It's not the style of the maison," he told the New York Times.