I just had some drinks in the city with a longtime female friend who is engaged to a male friend of mine. Would be pretty sad and unnecessary if I couldn't hang out with her anymore after her marriage without her soon-to-be husband being there too. I'd say that if you don't trust each other you shouldn't marry in the first place.
I'm not gonna lie...as liberal as I may be, if my fiance was at the bar having drinks with other men...I would dump her quickly
Why? People of the opposite sex can be friends. What would you do if your partner was bisexual? Would they never be allowed out without you accompanying them?
People of the opposite sex can be friends even if not in a relationship, but there are certain realities about male-female interaction that makes it impossible to become close friends with a woman and not subconsciously want it to turn into a relationship. ... what? My best friend of nearly 3 years is an objectively beautiful woman (and a practicing Muslim) and I don't have any interest in it becoming more than a mere close friendship. Even when I met my girlfriend almost 2 years ago, she knew of my preference for female friends and was alright with it, as was I knowing she talks to and hangs out with male friends of hers alone. She even had a close male friend who'd hang out alone at her house with her. Not to mention she's bi and one of her best friends is her ex girlfriend.
It's called trust. Trusting yourself and trusting each other.