In an exclusive interview with ABC Good Morning America's Diane Sawyer, Sheryl Crow talks intimately about the heartbreak and anguish she was forced to deal with when diagnosed with breast cancer -- and at the same time -- the break up of her engagement to be married to Lance Armstrong.

When the subject of the break up with seven-time Tour de France champion Armstrong was brought into the conversation, and the rumor the end of the relationship coincided with her breast cancer diagnosis, Crow says,

"No. No. No, it was really, I mean, really difficult, you know, just really difficult for both of us. I'm not angry. I mean, honestly, I look at it, and I just know that I can't be angry at Lance for being who he is. You know, he's a great person." Armstrong is a testicular cancer survivor.

Crow talks about the initial diagnosis of breast cancer, the subsequent lumpectomy and the many tears. The exclusive interview will air on Thursday, July 6 and Friday, July 7. To watch a preview video of the ABC Good Morning America interview, go here.

UPDATE: For our posts on the two-part interview:
Part One: Sheryl Crow: We are fragile but we are also divine.
Part two: Sheryl Crow adopts Eskimo diet to fight breast cancer.