Double-crosser (3-5)
I believe the answer is:
two-timer
(Other definitions for two-timer that I've seen before include "Unfaithful lover in arithmetic mode" , "Unfaithful partner" , "Unfaithful person" , "One sleeps around" , "Deceiver" .)
I believe the answer is:
two-timer
(Other definitions for two-timer that I've seen before include "Unfaithful lover in arithmetic mode" , "Unfaithful partner" , "Unfaithful person" , "One sleeps around" , "Deceiver" .)