Kellan Lutz is too busy to find a new girlfriend.

The 'Twilight' hunk's on/off relationship with AnnaLynne McCord appears to be over and he is too tied up with his acting and designing a jeans collection to be looking for a replacement.

He told host US radio Ryan Seacrest on his KIIS FM show: "I don't know if I can say I'm enjoying being single. I just don't have time to focus on finding a girlfriend."

Perhaps Kellan - Emmet Cullen in the 'Twilight films' - is feeling a little left out on his own after seeing how happy his co-star and friend Nikki Reed is with her engagement to 'American Idol' contestant Paul McDonald.

He said: "I've never seen Nikki so happy and we really got close throughout all these movies. I'm just so happy for her.

"It's great to see, especially in Hollywood, that real, lovely happiness or marriage, and I hope I'm invited!"

Kellan is next working on the film 'Immortals' with 'Slumdog Millionaire' star Frieda Pinto, whom he described as "a sweetheart inside and out," and designing his debut collection of jeans for denim label Dylan George.