Rihanna was so charmed after meeting Colin Farrell

Rihanna was so charmed after meeting reformed bad boy and notorious womanizer Colin Farrell that she has been sending him raunchy text messages.

The singer and the actor met on the UK TV chat show 'The Graham Norton Show' around Christmas. They exchanged phone numbers and reportedly began "sexting" shortly after that.

A source told The Sun, "Colin was taken aback by some of the texts. He reckons he might well be in there. They're both single, so why not?"

It is reported that on the show, Farrell had complimented Rihanna's legs saying, "They are very nice limbs. There's probably a reason I mentioned them, I had to get them off my mind."

Later on in the show, Rihanna was talking about getting a wax treatment that left Farrell wide-eyed with excitement.

Farrell split last year from Alicja Bachleda, his girlfriend of more than a year. They have a son, Henry Tadeusz, who was born last year. Farrell is also dad to 7-year-old son James, with model Kim Bordenave.

Rihanna recently split from her baseball player beau, Matt Kemp, and there have been rumors that she has been dating rapper Drake.

Rihanna turned 23 on Sunday and celebrated the big day in style with some very famous friends. Jay-Z, Zac Efron and Snoop Dogg were just a few of the stars that attended her exclusive birthday bash held at a private home in Beverly Hills.