The information is digested and she's grateful towards Merlin, showing as much by gently tugging on a lock of his hair and saying 'thank you' in Italian.

At the warning, she cants her head with a glint of mischief in her gaze. "I shall try and refrain from those, though I should probably know if she's one of your lovers as well? So as to avoid mentioning our frequent trysts, of course."

Because Melinoë isn't in a position to claim him solely, nor does she much care about monogamy at present. The two of them have set no rules, after all. She doesn't need that to change now, either.