Is love in the air for Cara Delevingne? Well judging by her latest Instagram snap, it certainly looks that way!

The Brit model and actress showed off some love bites she'd inflicted on a mystery man yesterday - who she affectionately called "fitty bum" -though we have a feeling we've figured out who it is.

[related]Having analysed many pictures like the true detectives we are, Cara's new man looks to be actor Jack O'Connell, who you'll know best as Cook from Skins.

The pair met on the set of forthcoming movie, Tulip Fever, in which they both star in and apparently 'got on really well'.

According to The Sun 'insiders': "So far their relationship is very casual, but she's a big fan of him. They've been on a few dates but it's not yet serious."

Maybe leave the poor guy's neck alone, eh Cara?