I have never been in a relationship, or even been on a date before, but in high school I seemed to get along with NT males (we had similar senses of humor, they were somewhat easy to talk to, etc...) so I think that I would prefer to be in a relationship with an NT.
As others have posted, I think it would be good for one of us to be able to communicate easily with people and to do things that I cannot always do such as talk on the phone.
I once had a co-worker once that was an Aspie, and although we were friendly and understood each other, our conversations were still very awkward because neither of us are able to carry on conversations very well. Additionally, when I observed how other people reacted to him (often with fear, confusion, talking behind his back, laughing at him) it made me depressed because I knew they were doing the same thing to me too, so I would prefer to be with someone who was able to bring out my positive traits and make me more comfortable rather than less comfortable.