Daniel Radcliffe described his first romantic comedy "What If" as "an incredibly smart and funny film."

"It does a really good job of capturing the moments when people fall in love without beating you over the head with it. It allows for the complexities (of love)," Radcliffe told Parade.

At age 12, Radcliffe rose to international fame playing the titular character in the film adaptation of J.K. Rowling's novel followed by seven other successful "Harry Potter" films.

Now 25, the actor said he did "What If" because he has "wanted to do something contemporary and modern for a long time, something that is unmistakably based in the world we live in" and he "never really gotten the chance before."

Radcliffe also described filming "What If" was exciting and added, "You don't read many scripts that are this good."

Describing his "What If" co-star Zoe Karzan as a generous, very smart and very funny actress, Radcliffe said, "She's great to work with. I can't really say enough nice things about her" and the two of them "have chemistry" and they are both "quite bookish" and "a bit nerdy."

According to Radcliffe, he and Karzan laugh at very similar things.

"When you get on a wavelength like that with somebody, you spend time cultivating it off set. When you're not actually filming, you're laughing together. You're learning what makes her tick. You can use that onscreen," Radcliffe explained.

Meanwhile, Radcliffe's former "A Young Doctor's Notebook" co-actor Jon Hamm recently praised the way he handled fame and success.

"I think he is massively talented. For the majority of his teens he was the most famous person in the world, in the eyes of 13 to 18 year olds, but he has handled it all with a grace that is enviable," Hamm told Contact Music. "He could buy a castle in the Highlands and be done with it!"

After visiting BBC Radio Studios on Aug. 22, Friday, Radcliffe was seen signing autographs for fans. The next day, the "What If" actor was at an Apple store event in London answering fan questions, Just Jared reported.

After "What If," Radcliffe said he is "always open to doing more comedy, but I'm looking to do something as great as possible. I never look to jump into anything just because I feel like, 'Oh, I should do another one of these,' or 'capitalize on the success of this film.'"