I'm a big believer in letting the guy do the asking initially. I think it's up to the woman to make it easy for him to do so, and I think you have done that.
Perhaps his nervousness is because he really is very attracted to you. I would recommend letting him make the next move. After all, he did ask you initially to go to the dog park...surely if he's interested he can initiate again.
He just seems shy. From what you have told us, I'm SURE he's interested. Let him make the moves but next time you see him, flirt a lot more with him. Seems like you'll have to exercise patience and let him build courage the more he sees you.
I'm a big believer in letting the guy do the asking initially. I think it's up to the woman to make it easy for him to do so, and I think you have done that.
Perhaps his nervousness is because he really is very attracted to you. I would recommend letting him make the next move. After all, he did ask you initially to go to the dog park...surely if he's interested he can initiate again.
How To Prevent Flu
How To Prevent Flu