SAN FRANCISCO — It will take more than an anti-SLAPP motion to bring down a suit filed against John Travolta by the movie star’s former pilot, the Second District Court of Appeal ruled Tuesday.

Douglas Gotterba also claims he was Travolta’s lover and, according to Tuesday’s ruling, planned to publish a tell-all book. Gotterba filed a declaratory judgment action after receiving threatening letters from Travolta’s attorney, Los Angeles-based lawyer-to-the-stars Martin Singer. The suit seeks a court order as to the validity of two conflicting termination agreements, one of which contained a confidentiality clause.