For me "spinning plates" means having women in your life you can date/sleep with
if you want to. However, it doesn't always mean acting on it every time.
Lets say I have a LTR and I go on a business trip alone to NYC where I have a "plate". You better believe I will bang her.
You have to remember a golden rule in the dating world most men forget:
Women would rather share an attractive man than have a loser all to themselves. So why would you EVER limit yourself to one woman when you don't have to?
Women will gladly share you. Think Tony Soprano.. I have two friends who cheat on their girlfriends..
the girls are totally aware of the cheating and they don't leave.
Remember women and men are not on the same level so don't believe you have to live up to the same standards you expect for your women. Only in recent times was cheating unacceptable for men. Marriage was originally designed to keep women from cheating while men did whatever they wanted