Past vs Present
Because of betrayal, I usually assume that my current partner's behavior is a sign of cheating, just because my ex did the same thing in the past, while in fact, maybe the situation is the same, but it occurs for different reasons. I shouldn’t generalize that the same behavior is always because of infidelity. Such as when he frequently likes other girls' pictures on Instagram. It may be just a random tap, not because he is interested in that girl.