They've been living it up in traditional BFF style while vacationing in St. Tropez, but Cara Delevingne and Selena Gomez could be sharing more than a good time.

Cara Delevingne & Selena Gomez Party In Italy?

The actress and model have been celebrating Gomez's 22nd birthday on a yacht and even glammed up  to attend the inaugural Leonardo DiCaprio Foundation Gala July 23, but the two BFFs could soon find themselves engaged in a  war, as conflicting reports have linked them both to one of their male companions on the trip-Tommy Chiabra.

Gomez and Chiabra, who is the founder and chairman of luxury yacht company Royal Yacht, was seen cuddling with Gomez on the yacht she and Delevingne have been enjoying their vacation on-with the two jumping off the boat while holding hands to take a dip in the Mediterranean, and later snuggling under the shower before wrapping up in a yellow towel.

Cara Delevingne 'Misses' Michelle Rodriguez?

However, according to The Daily Mail, Chiabra is reportedly trying to romance Delevingne instead, as the model recently became single in the past few months following a high-profile romance with actress Michelle Rodriguez.

And although a new romance would be a great way for Delevingne to show she doesn't care that Rodriguez has moved on with Zac Efron, Chiabra may have a hard time convincing her to be with him, as the model has revealed that she has a hard time trusting men since she became famous.

The model, who has never placed a label on her sexual orientation, has admitted that she generally prefers the company of women these days, telling The Telegraph in June that she finds men tend to have ulterior motives when it comes to relationships with her.

"I don't meet men just just want to be my friend. It just doesn't really happen that much, " she said at the time. "They're just shallow like that. Unless it's one of my girlfriend's boyfriends, most  guys are not like, 'Oh, we should just be mates.' I think it's harder to become friends with guy, because guys just want to have sex with you."