[Twosugars]

two things come to mind: all of them dancing couples have certain intimacy bc dancing is intimate; you can see how they are together off the dancefloor on strictly or itt
and giovanni is an italian, some nationalities are less reserved about such things
but of course there's a possibility he's putting moves on her too, as a womaniser bet he'd not mind y'know
imo nothing is going on (unless LT is reading this, then they're shagging and she's a serial adulteress brazenly engaging in foreplay with her toyboy in public)