India, Feb. 7 -- Tennis legend Venus Williams has set the rumor mill spinning after being seen wearing a sparkling diamond ring on her left hand while in Rome. The 44-year-old athlete was spotted sharing affectionate moments with Italian actor and filmmaker Andrea Preti, 36, adding fuel to speculation about a possible engagement.

Williams and Preti were seen enjoying each other's company outside a tennis training session in Rome. Photos obtained by PEOPLE captured the pair sharing a kiss, with Preti also planting another kiss on Williams' cheek as she beamed with joy.

Throughout the practice, Williams wore the eye-catching diamond ring, which featured a square-cut center stone with a pave setting. Preti was also seen watching from the s...