I have found often in relationships dynamics DO change, and often it is actually for the better...I have recovered from the worst of my illness and dynamics in all my relations across the board change, and if there was any value in them in the 1st place, dynamics can change positively...
It sounds like this could become sexual, have you ever been the aggressor when it pertains to sex? It can be quite fun! Is this something you want?
What do you want in the relationship? Better communication? Better sexual acting out of things you discuss/want? To know that your friend is not completely dependent on you?
This sounds exciting, please write more....