It depends if it's a true friendship I know many women who do not even look at a man or talk with a man
Because they don't want their boyfriends, husbands to be jealous also they don't want sexual attention
Also if you're going to be friends you're going to spend time together as friends that means spending time with just the other person
I would also add that kind of time could lead to romantic intimacy
If you respect somebody enough as a person then it stands the reason if they're good enough to be a friend they're good enough
To be a romantic partner because they are worth spending time with
If individuals are in relationships then romantic activity won't come into play