Miranda Lambert claims cheating was not the only reason her marriage fell apart ... Blake Shelton was way more into "The Voice" than her, and she felt like an abandoned wife ... so say our Miranda sources.
Our sources say Blake's hit TV show was a constant source of conflict between them. She says he had to spend between 7 and 8 months a year in Los Angeles ... a place she "hates." Nevertheless, the sources say she would fly to L.A. to see him -- sometimes just for a day.