I agree with a good part of what Babayada says although I would add that maybe looking for that Mythical Soulmate is a very undefined thing.
If you look into society for successful couples and maybe use them as your role model.
I believe that you are looking for a Successful Partnership with someone. The initial attraction is having love and sex with, but it is a long haul committment and you don't spend it all in the bedroom. In fact, unless you really make an effort, love and sex tends to go by the way side.
If you have a good partner you always have a common respect for each other and happiness is in your home.
They say if you have a great relationship, just to hold your partners hand is as good as sex or far better.
If you look for a Partner that you can build a successful relationship with you are off to a good start.
Jeff