The ‘X Factor’ star leapt into action after seeing some of the messages that were sent to Calder, as the trolls also got the phrase 'Louannah' trending on the social-networking site - leaving Louis fuming.
Tomlinson tweeted: "Truth of the matter is its actually not funny in the slightest. I'm reading through some horrible tweets very p*ssed off!"
He then made sure model Eleanor knew he only had eyes for her, stating in a message to the 19-year old beauty: "Love YOU ! xxxx."
The singer then added: "I couldn't be happier right now, so let it be :) Thank youuuuu x."
In response to Louis' tweet, Calder then stated: "And tomorrow is now today! :) Love yoouuu xxx."
Check out our exclusive chat with Louis and the boys below!
Copyright : MTV