1. Between parents & siblings, children to children; neighbours to neighbours, collegues to collegues; married person to single man; pure friendships do exist if. The last impenetrably bulletproof glass ceiling hovering over the heads of women prevents us from entering into friendships with men. So the simple answer to the above question is an unabashed "no." Married mothers shouldn't have men as their best friends and vice versa. If not for their kids'.