The 'On the Floor' hitmaker recently split from the 27-year-old dancer after two-and-a-half years of dating and the generous singer, who has six-year-old twins Max and Emme with ex-husband Marc Anthony, wanted him to have some lasting mementos from their relationship, reported People magazine.
"He gets to keep all the gifts that Jennifer bought him, including the customised truck that she gave him for his 25th birthday," a source said.
"Jennifer has always been very generous and Casper has bags of things to move out."
"He is upset about the split. He really wanted to stay with Jennifer. He loves her and her kids," the source added.