Eva Longoria's ex-boyfriend has told pals he is "really upset" about their split.

A representative for American football star Mark Sanchez announced yesterday that the couple called it quits after just a few months of dating.

Now reports have emerged that it was the 37-year-old actress who decided to end the relationship because she doesn't feel their lifestyles are compatible.

"Mark says he is really upset about the break-up with Eva. He is telling friends he tried everything he could to make her happy, and to make things work between them, but they live in very different worlds," a source told the New York Post. "The problem was Mark is very focused on football, while Eva is a busy businesswoman. She lives in Los Angeles, is doing a lot of philanthropic and political work, and is developing a number of TV shows, including the NBC dating series Ready for Love."

The former Desperate Housewives star was first linked to the 25-year-old sportsman in June this year, when they were spotted partying together in New York.

She later confirmed the romance in a couple of interviews, but remained insistent that things weren't serious.

"It really was about scheduling more than anything else. They will remain close friends," Mark's spokesman commented yesterday.

Meanwhile, the New York Jets player has reportedly been taking his mind off the split with series of nights out.

But according to onlookers, who spotted him dining at Toy restaurant in New York, the quarterback appeared to be rather down.

"He was very shy, dressed down in a long-sleeve button-down and jeans," one said.