Did lance Armstrong cheat on sheryl crow?

Answer 1

Several journalists and former team mates of Armstrong claim that he has taken the blood booster called EPO, but there has been no sufficient evidence and the US federal investigation against him was dropped early this year.

Apparently, yes.

After several years of rumors, an examination eventually found him guilty of systematic doping and conspiracy to avoid detection. For this he was stripped of his titles and banned from future racing.

After a long time of denial, Armstrong eventually went public and admitted his guilt in an interview with Oprah Winfrey.

Answer 2

No as they never were married.