"#WeLoveSRK" trended on the micro-blogging site, besides "#onebillionrising", "#Benefitsofbeingsingle" and "#HappyValentinesDay".
"#WeLoveSRK" because he's not just a perfect superstar but he's a perfect human being," a fan of the 'Jab Tak Hai Jaan' star tweeted.
Another wrote, "#WeLoveSRK trending on Valentines Day is no co-incidence. Love is in the air... ahem... I meant twitter. Happy SRK Day to one and all."
The 47-year-old actor himself did not tweet anything as he has been travelling.