I had a very close friend, a man, who was Scorpio. I loved him for years and never gave up hope that we would some day be married. For over 30 years he kept giving me mixed signals. He would reach out and open up to me, but if I let him know in any way that I was accepting he would retreat. It drove me absolutely mad. I finally had to let go of any notion that we would ever be romantically involved much less married and we remained friends. My experience with him taught me that what he wanted was for the "perfect - absolutely perfect" woman to just walk into his life without him having to do anything to look for her. He was never willing to even try - just thought that, like magic, SHE would appear.
A Scorpio is very mysterious and hard to figure out. Just when you think you know them, they retreat and change course. My suggestion is to just act as if all is well with you, nothing he does shocks or upsets you and you are confident, independent, strong, and never needy. A Scorpio seems to like strong, assertive, independant women.