I know how you are feeling about feeling like you love him more than he loves you and worrying that you are becoming too attached. This also happened to me. My boyfriend and I went out for 6 months and after we broke up, I realized that I had loved him more than he loved me. I was so attached that it killed me (and still does) when we broke up.
My suggestion to you is to really take care of yourself. You said that you are pretty insecure about yourself. You also sound like you are really in love with him and very attached...Not that that is a bad thing, but I have found that it's very important to hold on to a piece of yourself. Don't allow yourself to get more and more attached. Do things that make you feel good, hang out with friends that you may have lost some connection with and do things away from him sometimes just to be with yourself.
It will come out just how much he loves you. But just be able to stand on your own two feet no matter what the outcome. I wish you all the best of luck!
"I wanted a perfect ending. Now I've learned, the hard way,that some poems don't rhyme and some stories don't have a clear beginning, middle, and end. Life is about not knowing, having to change, taking the moment and making the best of it, without knowing what's going to happen next." ~Gilda Radner