Should I pay for Therapy??

So my boyfriend has had depression for multiple years before I even met him and the depression obviously affects our relationship and his relationships with everyone in his life. Most people around him make excuses for him about it when he goes into his mental cages saying things like “oh that’s just what he does”. I do have sympathy about it but he has talked about how he doesn’t want to stay in the mental space he is in and he has confided in me about how he does want to seek out therapy but he recently lost his job and therapy is a luxury for him at the moment and I also feel like he is very passive about getting help because he’s so use to dealing with it. Would it be stepping over boundaries to pay for his therapy. He doesn’t mind me buying things for him, but as a man he doesn’t necessarily like it, so I thought about just telling him I already payed for it so see how he reacts and if he reacts sort of positively I actually go along and pay for it.