Originally Posted by ivaiva
Tell him what you told us.
I agree with ivaiva. My first girlfriend had a huge impact on my life, and after the first few weeks I too felt as though I was in love with her. When I told her on the night of our first kiss that I loved her, I received the disturbing reply of, "Thank you". It hurt me, but after a while I realized that I was moving too fast.
What you should do is tell him how you feel, as you have told us. From what you've said, he has strong feelings for you and should understand that you need time to figure out how you feel about him. I'm confident that all will go well if you are just sincere and honest with him, and things for you 2 will work out. Good luck.