R&B singer Ne-Yo has been caught up in legal trouble with his ex after allegedly breaking their confidentiality agreement.

The “So Sick” hitmaker initially believed he fathered a child with his former lover Jesseca White and he turned over $575,000  in custodial support in 2009.

A paternity test later confirmed the 33 year old was not the child’s biological parent and they reportedly reached a settlement banning both parties from discussing the matter with the press.

But Ne-Yo, real name Shaffer Smith, opened up about the ordeal during an interview with VH1′s Behind the Music in September, and now White has accused him of breaking their legal gag order and defaming her character.

Her attorney, Gloria Allred, has fired off a letter to the star, alleging White has been unable to work and forced to seek financial aid because she is “beset by nausea, vomiting, and hair loss” as a result of his comments.

White is seeking to settle the matter amicably out of court, according to TMZ.