New research from the University of Guelph and Nipissing University shows that people who help others are more desirable to the opposite sex, have more sexual partners and more frequent sex. This study is the first to show that altruism may translate into real mating success in Western populations, that altruists have more mates than non-altruists. According to authors, it appears that altruism evolved in our species, in part, because it serves as a signal of other underlying desirable qualities, which helps individuals reproduce. The researchers interviewed about 800 people regarding their relationships and propensity for helping others, including giving to charity, donating blood, helping strangers cross the street, donating winnings and helping classmates, among other things. Even after controlling for age and personality, altruists were found to have greater success at dating and sex. https://www.sciencedaily.com/releases/2016/08/160804141642.htm
Makes sense considering that they'd be givers in bed, as opposed to only interested in receiving pleasure, thereby being preferable to having in a relationship. (Although, sex of course isn't the most important thing in a relationship.)
