Hyde just went to Vegas and married Samantha because he thought Jackie had already moved back to Kelso and was going to sleep with him. He had gone out to find Jackie to propose and left because of Kelso. Jackie was severely hurt because of Hyde's marriage, and showed it clearly. After she had fallen in love with Hyde, she still loved Kelso in her heart. When Jackie realized she loved Fez, they began dating, and deep down Hyde and Jackie's love will never come to an end.