Suspicion
Suspicion results in distrust and disapproval of the person: you can lose a lot in the midst of that! Also, on your aspect, irrelevant suspicion can lead you to be unnecessarily traumatized, fearful, full of anxiety and deep worry.
So at the end who experiences more pain? Of course, that will be the person suspecting. Sometimes, those you suspect can deliberately commit the act. That's ironical!