Brian Laundrie, the tight-lipped boyfriend of missing Long Island native Gabby Petito, is now missing himself, and hasn’t been seen for days. Laundrie’s lawyer said his client’s whereabouts are unknown, and said the FBI is now looking for both Gabby and Brian, Florida police told The Post. “His family has reported that they have not seen Brian as of Tuesday,” Josh Taylor, a public information officer for the North Port Police said.