Gemini, walk away!! He may love you, but in his heart he knows ,you are not the one he is supposed to be with. I know because I am an Aquarius woman and I have been guilty of the same thing in the past. In his heart, he loves you and even likes you which is (to him) even more important, but he knows that the person he has been searching for has not come along yet. He really does not want to lose or hurt you. Just move on and be his friend if you can.
I have loved many men, but there was always this little voice that said, not yet. Then one day, I found him. No hesitation, no doubts. I know this is painful, but it is more painful to be in this relationship wanting more and never getting it.