Celebrities are taking to Twitter and Instagram to wish their fans a Happy Valentine’s Day – and in some cases – promote their latest single, interview or anger rehabilitation.

Celebs Wish Fans Happy Valentine's Day

Pop singers Austin Mahone, Harry Styles, Niall Horan and Justin Bieber kept their Valentine’s Day messages short and sweet. Mahone took his tweet to the next level, however, with a link to his latest single “U.”