LOS ANGELES (Reuters) - The on-again, off-again love affair between actress Pamela Anderson and singer Kid Rock is on again and this time they plan to marry. The former Playboy model and the Detroit rap-rocker will exchange vows on July 29 aboard a yacht near the French Riviera city of St. Tropez, the celebrity magazine US Weekly reported. "Yes, I'm finally getting remarried ... I'm in love. I'm happy," Anderson writes on her Web site, pamelaanderson.com, in an entry on Tuesday. Anderson's spokeswoman declined to comment but US quoted an Anderson representative as saying, "They have been close for a...