two-time

To two time is to double cross someone or do something behind someone's back, especially to cheat on a spouse.

To two time is defined as to double cross someone or do something behind someone's back, especially to cheat on a spouse.  

verb

1. deceive or be unfaithful to (a lover or spouse).

   "he was two-timing a fiancée back in England"

verb (used with object), two-timed, two-tim·ing. Informal. to be unfaithful to (a lover or spouse).

having a relationship with by having a secret sexual relationship with someone else at the same time:

I ended the relationship when I found out he was two-timing me.

adjective

1. denoting someone who has done or experienced something twice.

   "a two-time winner of the event"
2.