We did our Engaged Encounter weekend, and never were we told we shouldn’t have opposite-sex friends. I guess it all depends on the opinions of those teaching the courses.
How sad to reduce men to nothing but constant humans who automatically start thinking impure thoughts about every female they encounter. My male friends, who are also married and secure in their marriages, would definitely be offended by your above statement. As would my husband. A good, decent man values friendships just as women do - they’re not looking to cheat, they’re looking to have a friendship with someone they share common values with. I’m sorry your experiences with men have obviously not been with many good ones, but please - don’t generalize men. They’re not all alike.