Or maybe you have someone already. And I think I'm doing the best I can between us. I'm both concerned and caring, but it seems you did not feel good in what I intend to give you.
Or maybe you are someone else, and I think I do best, and then between us. I am both worried and care, but it seems you don't have a good feel for what I intend to do.
Or perhaps you have to have someone who is, and I think that I do my best, and then between us and I was worried and concerned, but it seems that you are not feeling well in the things I intend to do for you