Researchers at the University of Wisconsin in Eau Claire ran a study on more than 400 adults ages 18 to 52, and their friendships with members of the opposite sex. They found that pretty much across the board, opposite-sex friendships just made people miserable.
There was almost always SOME degree of sexual tension, and the more attracted someone was to their friend, the less satisfied they were in their current romantic relationship. They also found that it was usually the guy in the friendship is the one causing the problems. The researchers say that’s just basic evolution…men aren’t wired to be friends with women, they’re wired to try to have sex with as many of them as possible.
But all that aside, can men and women just be friends?