Nicole Scherzinger in 'floods of tears' as ex Lewis Hamilton continues to party with other women

The superstar moved to tears during an X-Factor perfomance  Photo: ITV

Nicole Scherzinger has been left in "floods of tears" after seeing her ex Lewis Hamilton partying with other women, it has been claimed.

The singer split from her F1 ace partner last month, but is said to be upset after seeing him appear to move on quickly.

Lewis was seen out with a mystery blonde just a week later in New York , and has since posed with supermodel Naomi Campbell - who he was romantically linked with back in 2007.

"Nicole has been in pieces about the split," a source told New! magazine. "Lewis promised her he'd respect her and not go rushing into another relationship or even hang out with other girls.

"So she was devastated when she saw him partying in New York. She's been in floods of tears most of the time."

The star even reportedly sent a text to her ex, asking him to stop. But according to New! Lewis simply replied that he was "letting his hair down", and they have been in contact ever since.

Lewis was previously romantically linked to Naomi Campbell in 2007, shortly after he met Nicole, but they always insisted they were just friends.

In fact, he even captioned his recent snap: "Selfie with my big sis."

The supermodel has also been spotted out with them as a couple during their relationship.

The source added: "Lewis feels he should be able to have friendships with other women without feeling he constantly has to justify himself to her."

A rep for Lewis confirmed to New! that the F1 star is "definitely not romantically linked to anyone".

We have contacted Lewis and Nicole's reps for comment.