Well, since you call him your soul mate, sounds like you two or in your late teens or early 20's.
Just make sure he wants to make a clean break but from the cult, he might be feeling a bit conflicted although he did move away from his parents and his friends have stopped talking to him. Lots of young folks leave, sometimes mentally it happens quickly or there may be something in their mind that might still be bugging him a bit about walking away from the cult
Why do you think you're the one that made him lose his relationship with family and friends? He's the one that chose to walk away from the JWs,