I'm starting to notice that you are slipping away again. I understand that you may feel like this is exclusive, but are you happy? Disregard my peacemaking issue and hear me out. This is the trend that I have noticed and yet, although I thought things were going ok (positive side), I may have completely misinterpreted things. I think what we need to remember is that if this doesn't necessarily mean that you are bf/gf, then maybe you need to step back again and think to yourself what is coming of this. I think he now knows that you will be there for him in some ways and is using that to his advantage (not intentionally). If you can't and still don't understand what he wants, then it's time for you to get back on the No Contact wagon, because although I feel you have been supportive through all this, you are yet again, NOT HAPPY!! This was ultimately the concern you needed to take care of. Yourself.
I know this seems hypocritical of me, because I like to look things positively, but in reality, you can't make this positive unless you come out of this HAPPY. And if this isn't making you happy, then you need to do what's best for you to make yourself HAPPY. I mean, how can you be happy, when you are still questioning his motives? You still don't know what he wants out of this and I assure you, I don't think he does either. I truly think you need to send him a message and be clear that you won't stand for this anymore and stir things up a bit. This may shock him. It's like I said before, you may in fact one day explode on him and it will probalby feel real good.
I'm not saying to stop what you're doing and I'm not saying to stop being supportive and seeing him, but ask yourself this. How long will this last before you won't be able to handle it anymore? It's up to you to decide what to do in the end, but please make sure that you don't go back to square one AGAIN! Move forward and don't step back.
Cdoc
"Without music, life would be a mistake" -Neitzsche