Jessica Simpson's ex-husband Nick Lachey has denied he is set for another split - after his relationship with Vanessa Minnillo was reported to be on the rocks.
Lachey - who split from Simpson in 2006 after four years of marriage - has been dating model/TV presenter Minnillo since 2007.
But, according to the New York Daily News, the singer is set to end the romance over fears Minnillo is harming his career.
A source tells the publication, "(They) are on the rocks big time. They argue all the time, and Nick is done with her. He feels like shes holding him back, career wise.
However, a representative for Lachey has denied the report, saying, "To my knowledge, everything is great with them.