Valentine's Day 2013: Stars tweet about love and romance

BEVERLY HILLS, CA - SEPTEMBER 07: Mariah Carey (L) and Nick Cannon kiss at the 12th Annual BMI Urban Awards at Saban Theatre on September 7, 2012 in Beverly Hills, California. (Photo by Noel Vasquez/Getty Images)
Noel Vasquez

Stars have taken to Twitter to share thoughts of love and romance on this Valentine's Day.

For Mariah Carey, the holiday started Wednesday with a romantic evening alongside her husband, Nick Cannon. Rapper 50 Cent, meanwhile, offered to be a valentine for anyone who doesn't have a special someone this year. And Ryan Seacrest tweeted at his girlfriend, Julianne Hough, to remind her not to be late for their Valentine's date.

Read on to see how celebrities are spending Cupid's holiday.