I used to have that happen- my wife used to let them flirt with me..
One night we were at a party- a woman (I still remmber her ..damn what a hottie), kept staring, flirting, etc.... At one point the 3 of us wound up in the kitchen together.... the woman kept trying to bump against me, compliment me etc... My wife teasing/laughingly/seriously (she had a wicked sense of humor) walked up to me, put one arm around me and with teh other hand grabbed my crotch (I was wearing loose slacks and was 1/2 hard from the attention) and looked the woman in the eye and sweetly said "MINE"....
then kept the smile and said nicely .."Got it?"
the woman laughed, we all laughed (I had to later go to the bathroom to jack off- no WAY was I staying soft with 2 sexy women fighting over me...
damn....