From an evolutionary standpoint, humans evolved to have the ability and tendency to fall in romantic love because combination of DNA (via sex) served a huge advantage in propagation of genes, and because of the enormous time it takes to successfully raise an organism until it fully developed a (in relation to overall body size) a very large and intelligent brain (thereby creating evolutionary pressure for mates to stay together during that time of rearing offspring). Therefore, from logic, sexual attraction must be present in romantic love because without sex, organisms will have no mechanism to procreate or combine DNA. Without sexual attraction, romantic love would not serve an advantage or function in evolution. And anytime sex exists, sexual selection must also exist, which means sexual attraction must exist. So does it follow that sexual attraction necessary for romantic love, which means that asexual people cannot fall in romantic love?