When your loved one goes and either kisses, makes sexual contact, or flirts with another while being with you.
1: How's you and *baes name* doing?
2:Amazing but hes talking with *person* right now!
*person* to 2: Omg *bae* is so sweet he bought me flowers and asked me out!!
2 to 1: *bae* asked *person* out...
1: THAT CHEATER!?!