Men More Sexually Aroused When They Suspect Cheating? 4 Weird Things Science Told Us About Sex This Week

Here are some things we learned about sex this week. Rats: They’re just like us! Or a little like us, when it comes to liking their ladies in lingerie.

1. Male rats like their lady rats in lingerie: If you thought human males were the only ones into lingerie, you are wrong and very anthro-normative. It’s not that either humans or rats are evolutionarily programmed to like Victoria Secret. It’s that both humans and male rats can learn how to associate certain things with sex and thus find them sexier. Psychologists from Concordia University in Montreal gathered a dozen of male virgin rats (I know! Where do you find even a handful of virgin rats these days?) and threw a rat mixer for them. All the lady rats in attendance were wearing little rat jackets. And the male and female rats mated, as the do. On another occasion, scientists took the same bunch of now not-so-virgin male rats and threw them into a room, or cage, with two lady rats. One was naked and one was wearing the same jacket. The rats preferred the jacketed one. And by prefer I mean mounted her more frequently and ejaculated faster. Co-author Gonzalo R. Quintana Zunino explained that the experiment demonstrated that rats were able to learn, “Each time my partner wears lingerie [a jacket], I’m going to have sex.” Sounds a little presumptuous.

2. There must be something in the mistletoe: I must go to very boring holiday parties because I find this next study shocking. According to a survey done on 1,500 people by married dating site IllicitEncounters.com, 34% of Brits have sex with their colleagues after office holiday parties. So, a married dating site may skew a little, statistically speaking, when it comes to shagging (that’s what the Brits call having sex). Also 67% kissed a co-worker.

3. Indonesia introduces male birth control: Indonesian scientists are making pills with from the gendarussa shrub, which men on the island of Papua have long used as birth control by boiling it in tea and drinking it a half hour before having sex. According to scientists from the government’s National Family Planning Coordination Board and Airlangga University, the pills, which have been tested on 350 men, are 99% effective. They will go on sale in 2016. Why is male birth control so exciting? Well, it doesn’t mess with a woman’s hormones, which can have unpleasant side-effects.

4. Male insecurity can be great for a woman’s sex life:  A study demonstrated a direct relationship between how many male friends a woman has and the amount of sex she has. I, at first, thought this meant women with more male friends have more sex because they have more male friends with whom to have sex. But the study is actually about the way a woman who has lots of male friends and is in a monogamous heterosexual relationship will have more sex with her boyfriend than a woman who has fewer male friends and is in a monogamous relationship. This can be attributed to what scientists call “sperm competition psychology,” or the idea that a man whose girlfriend has more male friends has more sex rivals. Michael Pham, the lead author of the Oakland University study explained,

“A lot of work shows that men are sexually aroused by their partner when they estimate a greater likelihood of partner infidelity… This does not mean that men want their partner to cheat on them. Rather, this means that if they estimate a greater likelihood of their partner’s infidelity, then they may (subconsciously) want to have sex with her to enter into sperm competition.”

And this, argues Pham, is “human nature… We need to be reminded that our partner is valuable to us and desirable to others. This makes us keep working at maintaining relationship satisfaction. Finding that right balance of inducing your partner’s jealousy will optimize a couple’s sex life.”

So, ladies, is your man being less than attentive? Well, have a female friend call you, pick up your cell, and say, “Hi John! [pause] I like you too. But just as a friend. Thank you for sharing that you would like to have sex with me. But I’m in a committed relationship.” That will really jazz up your sex life.

Originally posted on Alternet

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