Have you thought about how belittling it may have been for him to have you basically pay his father so he could come to see you? Ouch! especially when his grandmother controls his finances like that.

He probably feels useless and hopeless because he doesn't have a job and he isn't his own master. His grandmother is abusing him mentally, emotionally and financially, and his girlfriend is emasculating him by trying to bribe or pay his father so he can visit her (this could be in his mind).

Maybe giving him a call and saying "hey I didnt think, I just wanted you here with me" that may help him to feel a little better. Imagine how you would feel if everyone around you had a controlling interest in your life but you? If everyone had a say in what you did and where you went, but you didn't?

If it were me I'd backpeddle a little and ask him if he wanted me to go visit him instead. Most people feel the need to control their own life and the details of it particularly if there are other people taking charge and belittling them the way grandmother has. He wouldn't be wanting another woman to try to control him.

Just be kind and gentle with him without apologising too much and see what happens. Hopefully he will understand that you didn't realise that it would hurt or cause him any pain,

Good luck,

Rhiannon