The two composers ceased to be on friendly terms in the middle of the first decade of the 1900s, for musical and possibly personal reasons. Their admirers began to form factions, with adherents of one composer denigrating the other. Disputes arose about the chronology of the composers' works and who influenced whom. Prominent in the anti-Ravel camp was Lalo, who wrote, "Where M. Debussy is all sensitivity, M. Ravel is all insensitivity, borrowing without hesitation not only technique but the sensitivity of other people." The public tension led to personal estrangement. Ravel said, "It's probably better for us, after all, to be on frigid terms for illogical reasons." Nichols suggests an additional reason for the rift. In 1904 Debussy left his wife and went to live with the singer Emma Bardac. Ravel, together with his close friend and confidante Misia Edwards and the opera star Lucienne Bréval, contributed to a modest regular income for the deserted Lilly Debussy, a fact that Nichols suggests may have rankled with her husband.