[He is certain Kylo is able to feel his concern - his worry - his fear. Anakin is consumed by that latter emotion and it is the reason he was eventually driven, briefly, insane. For the sake of those he loves - and Kylo certainly qualifies - he is trying to drag himself back from that mad agony. But he needs help; far too often he has felt his hand grasping at empty air.]
private;
I love you, Kylo. Of course I am your ally.