Justin Timberlake - Jessica Biel spotted kissing on a Love Boat

It looks like things are getting serious for loved up couple Justin Timberlake and actress Jessica Biel. Justin Timberlake and Jessica Biel were spotted kissing aboard a speedboat as the “Sexyback” singer went to Oslo to continue his European tour.

When Biel, 26, joined Timberlake, 25, on his FutureSex/LoveSounds tour in Amsterdam on June 17, the lovebirds’ Scandinavian week of romance began. First, they hopped a private jet to Stockholm, Sweden, where Biel got in some good bonding and shopping time with Timberlake’s mom, Lynn Harless. Later, the couple and some friends dined at a café, where another diner says they had “very good conversation. They had fun together.”

According to The Mirror the SexyBack singer said he was forced to send the actress back to the U.S. recently because he finds it difficult to focus on his work when he is with her.

He told The Mirror: "Jessica met up with me in Manchester, England, but for Paris I told her categorically no. This tour is very important to me. I'm doing it really seriously so there's no question of playing sweethearts."

"This time I'm putting the machine before everything else."

Justin Timberlake in Love with Jessica Biel

After his failed relationships with Britney Spears and Cameron Diaz, Justin Timberlake is finally ready to get serious with his new love, Jessica Biel.

Jessica Biel and Justin Timberlake, who were first linked at a Golden Globe afterparty in January, recently spent several days together in the U.K., where Timberlake was touring. (They holed up in Manchester’s five-star Lowry Hotel and took in a soccer match.)

"She's the coolest chick ever. He wants to be with her all the time. He's ready to be serious," People magazine quoted a source close to Justin as saying.

Over the last few months, Timberlake, 26, and Biel, 25, have also been spotted snowboarding with pals at the Sundance Film Festival, and Biel recently attended a barbeque at Timberlake’s L.A. home.