It'd be totally illegal because Luca's not legally an adult (only sixteen yo), but it would be cute as hell. 
He's probably too absentminded to actually flirt with anyone, but that absentmindedness coupled with his other traits could be considered endearing. 

@Len: Did you ever do an rp with LetterA, because I have a Len in my skype contacts that I think I added when I was part of a group chat in one of his rps.