Why One Direction’s Louis Tomlinson, Eleanor Caldor Will “Be Together Forever”

Louis Tomlinson and girlfriend Eleanor Calder hold hands while shopping in Chelsea in New York City on December 3, 2012. Splash News Online

Teen heartthrob Louis Tomlinson celebrated his first anniversary with girlfriend Eleanor Calder Nov. 17 — and he has One Direction bandmate Harry Styles to thank for setting them up.

"Harry knew they would hit it off — she's totally Louis' type," a source recently told Us Weekly.

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Even so, it's not always easy for the University of Manchester student to date a guy chased by screaming fans. "They've had tough moments," the source explained, "but Louis is a hardworking guy; he would never give up when things get difficult. He's also extremely loyal."

A pal added, "They'll be together forever. You get that feeling being around them."

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Earlier this year, Tomlinson assured Us he'd never break the 20-year-old brunette's heart. "I'm a one-woman man with Eleanor," he said. "I can be a romantic — but not too sickly."

In a November Seventeen cover story, the "Little Things" singer, 20, explained why Calder is The One.

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"Aside from the fact that she's hot, she had everything that I was looking for. She's funny, loud and confident," he said. "I'm not the type of guy who enjoys being single. I'm happy with the way things are with Eleanor. I told her I loved her after five months. I didn't just want up one day and think I was in love — I knew it in my heart."

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