Honestly? Most my life, at one point religion said it was wrong, at one point I actualy gave a damn what society thought, at one point I just thought that was how it was supposed to be, at one point I was actively just didn't have a name for it, when I got married it was a mix of this is how it should be and I can't trust him to be honest so how would it work and I'm too fucked up in my own self image and health to deal with him seeing anyone else let alone me doing it, and now for the last yr and a half I have learned to let me be and Karma be Karma and just live life.
So in short-20 some odd years or 1.5 yrs depending on how you look at it.