I think it has more to do with the actual relationship between two people than with riding. My husband and I don't have jealously issues or crap like that. There aren't any women around here that ride, but if there were and I couldn't go, I'd be fine if she was there. My husband's a gentleman, if there was a stuck chic somewhere we'd both go help. And if he can't go, it's not an issue for me to go. Of course it's a big bummer if we both can't go on all the rides, but it's about the riding and nothing else.
I had this friend for about 15 years, invited her new husband to ride with us. He was a good rider and had a great time. Said to call as he wanted to go the next weekend. He wouldn't answer the phone and his sled was sitting out for sale about 3 days later. She didn't want him around other women, and she didn't want him doing anything that she couldn't do. Because she can't sled and so really isn't into it other than riding trail once a year. She started telling everyone I had an agenda and was trying to pick up her husband because he went with us ONCE, my husband and brother were both there too. I ended that friendship for good. If that's how a chic is after 15 yrs of friendship, I don't want to be friends.
Most women are jealous and insecure, and most men are scared of them, or scared of the repercussions. I get along with the wives of the guys we ride with, they know I'm there to ride not flirt with their husbands. And I just hope any men I ride with have a good enough relationship it doesn't cause problems. I don't want to cause problems for them, but I'm not skipping any rides because it might upset the wives.