Jack Geller is the father of Monica and Ross Geller . He is affectionate to both his children; lovingly calling Monica his "little har-monica." However, some of his actions do help to feed the assumption that Ross is the favored Geller child. Jack unknowingly used boxes of Monica's childhood memorabilia to prevent flood damage to his Porche, ruining everything. Also, he reveals to Monica after she becomes engaged to Chandler that the "Monica wedding fund" was spent on a beach house, as he and her mother thought she would never get married.