Serena engaged to Reddit founder Alexis Ohanian

The tennis star, who is verified on Reddit, shared the news of their engagement on the forum /r/isaidyes.

Serena Williams with Alexis Ohanian in November 2016.

Twenty-time singles Grand Slam champion Serena Williams and Reddit co-founder Alexis Ohanian are engaged.

The tennis star, who is verified on Reddit, shared the news of their engagement on the forum >/r/isaidyes .

Ohanian also announced Williams' acceptance on his Facebook page.

Williams and Ohanian, who have been dating since 2015, have mostly kept their romance out of the spotlight, though she does post pictures of them on her Instagram account from time to time.

Williams won this year's Wimbledon crown, the 71st singles title of her career, to match Steffi Graf with an Open Era-record 22 Grand Slam singles titles, two shy of Margaret Court's all-time record.

She later completed 186 consecutive weeks as world number one, matching Graf for the longest run at the top in rankings history, but she was dethroned from the spot by Angelique Kerber in September.