I have friends, male and female, across a great spectrum of age and culture, and so does my husband, although more of his are a similar age to him. I have complete trust in my man, as he does in me and so having friends of the opposite sex has never been an issue. A few years ago we realised that a majority of our joint friends were actually mine and my husband has since made a few more friendships of his own and now has a lovely group of, mostly men, friends. A few days ago he had four of them here for a meal that I left them to get on with whilst I took myself off to do other things - and I loved hearing their laughter and obvious camaraderie.
What's the situation for you? Do you have lots of friends or a few? Same sex or opposite? Are your friendships a cause of friction or a boon? Are your friends spread around geographically or nearby?
Different diets - AIBU?
My heart broke - grandchildren
It wasn't unusual - cinema