I've not said there is a romantic interest between Dan & Fanny (it will come out 6 months from now if it is the case). More the change in Dan now that Fanny has got him under her control by blowing smoke up his ass about his skills & talents. I know, I know..I'm going to use the narc frame of reference is that how they operate with their love bombing. This is not to say that there is a romantic love intent. Fanny uses it on anyone man, woman, child, volunteer, Ians, waifs & strays ..anyone and everyone. It's not about her giving love,. It's so she gets it back by giving excessive priase, flattery & fake love.
Term narcissist comes from the story of Narcissus (where the term comes from) was that he was a very beautiful young man & many fell in love with him - but he only showed them disdain and contempt. Echo, a woodland nymph fell in love with him but as Narcissus was incapable of loving anyone but himself he rejected her. Echo fled back into the mountain woodlands & faded away leaving only the remnants of her voice behind.
Nemesis, the goddess of retribution and revenge, learned what had happened & decided to punish Narcissus for his behaviour. She led him to a pool; there, the man saw his reflection in the water and fell in love with it. Although he did not realise in the beginning that it was just a reflection, when he understood it, he fell in despair that his love could not materialise and he died of sorrow by the pool,. Here endeth the Greek Mythology lesson
So to me Jarvis loves no-one but herself. She NEEDS to be loved by anything & everything - because that's her fuel. An empty vessel where he void needs to full up of adoration.