Jennifer Lopez and Casper Smart split is all but a certainty after his second transsexual encounter and the American Idol judge flew to New York alone as she was embarassed by his antics.

'The relationship is all but over,' an insider told The Dirty website.

According to the website, Casper Smart has been caught with dirty hands yet again as screengrab of his chat with Xristina Marie, reportedly a Brazilian and Colombian transsexual model, on Instagram was leaked online.

"Xristina Marie also had inappropriate relations with Casper Smart. According to our source the couple met in Miami and Casper Smart was 100% aware that Xristina is a transsexual," The Dirty's Nik Richie wrote.

The scandal came a week after Casper Smart and another transsexual model, Sofie Vissa, were caught flirting with each other.

The 27-year-old backup dancer, however, denied that he hooked up with Vissa.

However, another site, RadarOnline reported that it's only a matter of time for the Jennifer Lopez and Casper Smart split as she flew to New York City alone, which doesn't augur well on their three-year relationship.

"Jennifer has been embarrassed by him yet again. He was not invited to accompany her to New York," a friend of the actress told Radar.

Another indication that the Jennifer Lopez and Casper Smart split is near is the fact the backup dancer was not "going to Brazil for the World Cup" to accompany the 44-year-old ex of Marc Anthony. Jennifer Lopez and Pitbull performed the official song "We Are One (Ole Ola)" of the Cup.

"Soccer is his favorite sport, so it must really suck for him," the source said.

Casper Smart, noted MailOnline, also wasn't with Jennifer Lopez during the Healthy Childhood Launch on Sunday in New York. It was her sister, Lynda, who was by her side during the event. The last time the two were seen in public together was on May 20 as they head off to Craig's restaurant in West Hollywood, the website added.