Well my consular is at Belsavis, level 46, with Zenith at 10,000 affection and so far she hasn't even had a hint.
So unless he suddenly hurls himself at my consular screaming "I LOVE YOU, TAKE ME NOW" in the next 4 levels ... I don't think he is romanceable.
Which is disappointing, because I like my sociopathic fictional characters.