Opposite Sex Friendships - Do They Help or Hinder Relationships?

Some say opposite sex friendships CAN work. Some say they CAN'T. What do you believe?
 

• Do you trust his/her business partner even when your "spidey" senses are tingling?
• Is she/he really just a co-worker?
• What would you say or do if you found out that there was a previous sexual relationship with this so called FRIEND?
• She/he keeps giving him/her the eye - is there more than what meets the eye?
• Should you know all of his/her opposite sex friends?
• What do you say, or do if your significant has a history of demonstrating questionable judgment with past friendships?
• Does marriage change your response?
• Would you ask them to cut the friendship off? But, what if they were friends before YOU?
• How would you feel if they only talk when you're not around?