A Happy Bond is a memento found in Silent Hill: Shattered Memories. Harry Mason finds it inside a fish in Silent Hill's sewers. To retrieve the memento, Harry has to pull a hook out of the fish's mouth, causing it to flop around and then vomit out the bracelet. The memento consists of a weaved bracelet with the word "Sweetie" on it.
"A Happy Bond" likely represents the love between Harry and Cheryl Mason, as Harry often called Cheryl "sweetie". It may also have been a real bracelet Cheryl owned.