>>936350381 (OP)Easy.
You cut contact. Pack your shit up, legally change your name to Peter Zahut. Move to a new state. Start a new life in Dallas, Mackinac Island, or somewhere in rural Wisconsin.
Make new friends. Bring your neighbors quiche. Or cake. Or pie. Whatever it is you can bake quickly and efficiently so you stay in their good graces. If you don't know how to bake, take up the new hobby.
Become a stand-up citizen in your new town. Help old ladies cross the street. Start a dog walking business. Build your empire. Introduce yourself to everyone you meet as "Pete." Be the man your father would have wanted you to be. A purebred gentleman.
And when your now forgotten ex finally manages to scrape and scrounge for information on your whereabouts, asking around for years, trying to get answers on what happened to poor Mittens, she manages to get a phone number.
>"Hello, this is Pete Zahut. How can I help you today?"