I think you would be more successful if you moved on with your life without her. Give yourself 45 days of no contact with her. Give yourself 45 days to stop thinking about her. You will be suprised how quickly you forget she is not contacting you and even more suprised when she does. In those 45 days devise a plan of where you will be in 6 months. new hobbies, new job, a new female companion, good times.
Contary to recommendations of move back home, I suggest move further away. Forget about her. Leave her alone. Snub her if you must.
Let her think about you, and wonder why you gave up.
No longer a need to validate or wonder or depress about a cheating spouse. Grow as an individual and realize how happy your life really is when you rid yourself of the BS.