How come it's so easy for guys to get over a break-up?
Most Helpful Guy
From an evolutionary/biological perspective, the basic goal of the male is to spread as much seed as he can, thereby passing on his genes through many offspring, surviving through the next generation. This is basically how all male animals work. (Read "The Selfish Gene" by Richard Dawkins or take a biology course, and you'll see what I mean. )
Taking that into account, a guy will get over a girl because he does not want to lose any opportunities with any new potential "mates. " Obviously, this doesn't directly apply to today's social settings, but it's a legitimate explanation of a man's human, yet animalistic, nature.1