The One Direction star, who started dating the model in September, told The Sun that he is glad of his fans' reaction to the couple's relationship.
Tomlinson declared: "I am a one-woman man with Eleanor. It's still not quite official. We haven't put a name on it but I really like her, she's cool.
"The good thing is everyone has been so nice about it. If the fans see her they ask her for a photo and she gets shy."
The singer added: "Half the reason I really like her is that she's not fazed by the fans. She's good."
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Watch the music video for One Direction's hit single 'What Makes You Beautiful' below: