This Tweet links to a detailed article from 2017. Men and women are similar in many ways, but they are extremely different when it comes to attitudes regarding casual sex.
From the cited article at Psychology Today:
Over the last few decades almost all research studies have found that men are much more eager for casual sex than women are (Oliver & Hyde, 1993; Petersen & Hyde, 2010). This is especially true when it comes to desires for short-term mating with many different sexual partners (Schmitt et al., 2003), and is even more true for wanting to have sex with complete and total strangers (Tappé et al., 2013).
In a classic social psychological experiment from the 1980s, Clark and Hatfield (1989) put the idea of sex differences in consenting to sex with strangers to a real-life test. They had experimental confederates approach college students across various campuses and ask, “I’ve been noticing you around campus. I find you to be very attractive. Would you go to bed with me tonight?” Around 75 percent of men agreed to have sex with a complete stranger, whereas no women (0 percent) agreed. In terms of effect size, this is one of the largest sex differences ever discovered in psychological science (Hyde, 2005).
