New York ? Olivia Newton-John is still hoping her missing boyfriend returns – more than three months after he disappeared.

“I love him very much and this is very hard to go through,” Newton-John said Monday on ABC’s “Good Morning America.”

Newton-John’s longtime boyfriend, 48-year-old Patrick Kim McDermott, failed to return from a June 30 overnight fishing trip off the California coast.

The Coast Guard has been investigating his disappearance as a missing person case, including the possibility that McDermott staged his disappearance.

McDermott had filed for bankruptcy in 2000 and was embroiled in a legal dispute in April over late child support payments to his ex-wife, actress Yvette Nipar. The couple have a 13-year-old son.