John Mayer & Jessica Simpson Back Together Already?

Jessica Simpson and John Mayer reunited in New York City on Sunday night, sources close to the situation tell PEOPLE.

"They definitely went on a date last night. She still loves him... but he's scared of commitment. He breaks up with her and then regrets it and then begs her to get back together."

"They're in a normal relationship," says the source. "This happens with relationships sometimes."

Adds the source: "They went on a date last night. They had a great time. They had dinner."

Mayer was spotted leaving the Jessica's New York hotel early Monday morning.

A guest who spotted Mayer leaving Simpson's suite at the Soho Grand tells In Touch Weekly magazine, "He was looking really happy. He couldn't stop smiling."