WATCH: Barbados' love affair with the game of road tennis on this week's episode of TenniStory

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Love is in the air on this Valentine's Day—and it's all over the Internet, too, from tennis' promise to Play For Love to Barbados' national love affair with road tennis.

Here, we round up the most heart-warming and romantic posts sending social media a-flutter today...

Starting with Petra Kvitova, who gave a shoutout to her first love from the courts of the Qatar TotalEnergies Open. The Czech celebrated Valentine's Day in Doha with a 7-5, 6-4 first-round victory over Zhang Shuai, and this tweet:

Billie Jean King, who made a surprise Super Bowl cameo during an NFL ad on Sunday, had this lovely note for wife and longtime partner Ilana Kloss:

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"Beyond happy to have you by my side," wrote Ana Ivanovic, who recently shared that she is expecting her third child with husband and retired German soccer star Bastian Schweinsteiger.

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"Love doing life with you," wrote Morgan Riddle, whose relationship with world No. 7 Taylor Fritz was featured in the Netflix docuseries Break Point.

Playing on home soil this week at the ATP 250 event in Buenos Aires, Diego Schwartzman shared this post with model girlfriend Eugenia De Martino:

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Valentine's Day is "forever everyday" for Paula Badosa and model boyfriend Juan Betancourt.

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The love of a lifetime: Victoria Azarenka shared this sweet note and Valentine's Day gift from son Leo.

We'll leave you with a few more Valentine's Day gems, courtesy of our Tennis Channel Instagram account:

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