HOW BAD IS A LITTLE FLIRTING?!!!!!!!!!!!!!! !!!!!!!

This weekened my frineds and I got into a debate about flirting. I told them that I see nothing wrong with flirting. I have a man and we both flirt. We appreciate the beauty in everyone we see and we let it be known to them that they are beatufil. Well my frineds say that they would kill theri man if they caught him flirting. I say that it's harmless and healthy. As long as no numbers are exchanged and no sexual contact is made, what's the problem? I argued that everyone loves to hear that they look good, or that they are beautiful, so why not just tell them? Would you be upset at a person that told you you were beautiful or flirted a little with you? I have no rpoblem with my man flirting and he doesn't have a problem with me flirting. How many of you think flirting is harmless? How many of you would be upset with your s/o if you caught them flirting?