Luca has finally nailed his true colours to the mast, and his behaviour tonight was appalling, but it's only tonight that I really stopped to look at his behaviour towards Tasha. He hates her! his behaviour towards her, and his manipulation of Andrew, and their relationship is shocking.
A normal friend, even if he didn't like his friend's chosen partner, would be civil, keep his opinions neutral, and be happy his friend was happy. Not take every opportunity to hammer wedge between them. For all Andrew and Tasha's drama, they do seem to be growing (a bit) as a couple, and communicating more, and Andrew was right when he said about "he can't complain about T and Billy because he did more/worse". Luca just can't seem to accept Andrew is happy, and T is the one he wants, and he is getting more and more nasty about it, all in a creepy veneer of "well everybody thinks it too"
Luca is a nasty piece of work, and I hope Gemma (and everyone else in there) sees it.