 First, it states that females are more choosy and men more competitive, therefore predicting that flirting as courtship initiation will be more commonly used amongst men.The theory also predicts that females invest more in their offspring, which makes them more prone to invest in their relationship as this can provide resources that can contribute to their offspring's survival.On the other hand, men have no guarantee that their mates’ offspring is theirs, so have less incentives to seek long-term relationships; thereby explaining why men care less about flirting for relationship development.