She doesn’t think you cheated on her, she thinks (was told) you tried to cheat on her without success. This is not the first time she has made these accusations on you and with different people. I would have never let you cheat on her with me, and I never perceived that to be your intentions with whatever it was you were trying to tell me with your hidden messages. I’ve never said anything because you were never out of line in that respect. So I find it hard to believe these accusations, I would have never pinned you to be that stupid.