Natural selection doesn't have anything to do with it.

The key to getting a girlfriend is paper, except for that recovering prostitute I dated one time. She really was intelligent, well-mannered, and interesting to be around. I'll never understand how or why we got together, but she latched on for some reason and we went out and painted the town green. Actually, we went to cello recitals, but that's beside the point.

She had a heroin relapse and had to go away to a recovery program. Have no idea what became of her. But I do hope she continued her Bible studies and her relationship with God.

But, in most cases, paper.