Polyamsexual
When a person is biologically and mentally pre-disposed towards having a relationship with more than one person. Someone who is naturally attracted to the ethical non-monogamy and may be mentally unhappy or emotionally unfulfilled in a monogamous relationship.
Brett: Hey dude I saw your new girlfriend out with another guy. I think she's cheating.
Dan: No man she's polyamsexual, that's her other boyfriend! I play COD with him on Thursdays!
Dan: No man she's polyamsexual, that's her other boyfriend! I play COD with him on Thursdays!