I gotta tell you that alot of your distrust is stemming from your fear and insecurity. And honestly, you said you were a jerk so if she found someone else to fill her emotional need, there's nothing wrong with that. You made a mistake and are paying the consequences of that.
She said she was done with you, are getting L involved, why shouldn't she have another guy? In all honesty, she's right in thinking that the changes you've made might not stick. Your paranoia and insecurity isn't helping you much.
Okay, so say the PI goes and finds out that there is another guy. Do you honestly think it'll make you feel better? You're just looking at your W to suffer and take the heat for your own suffering. And what if there wasn't another guy? Then you'd still be faced with the fact that, hey I was a jerk in the past and my W really doesn't like me.
Let me tell you something. My W had an A with her boss. It's taken her 3 years to feel safe with me again because I helped her in gaining that trust.
What I hear in your posts is a scared insecure guy. If you want your M to work with or without another person, then deal with that. What you can't deal with is the fact that she left you. Period. Accept it and change.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.