That is so sweet and lovely of him!
As for the rest, I think we must be long lost twins. I have the exact same problem. Never knowing how to accept help even when I desperately need it, thinking that the other person doesn't really want to be doing this or that I shouldn't need the help in the first place.
My brother actually went as far as buying me a wonderwoman keyring as a joke!
Enjoy the favours as what they are, I guess, someone expressing their love for you in the way they know how. They say men like to express love by fixing/solving problems, sounds like that's what he's doing.
