London: One Direction singer Niall Horan has been flirting with `Hollyoaks` actress Rachel Shenton on Twitter.
Horan, 19, was smitten with the 25-year-old actress after he spotted her on TV show `This Morning` and took to his Twitter account to praise her beauty, reported Daily Mirror.
"That girl on @itvthismorning is beautiful," Horan posted.
In reply, Shenton and TV presenter sent him a picture on Twitter with the actress holding up a sign saying "Hello Niall.
Horan immediately sent back his own picture message saying "Hello Rachel."
However, Shenton later ruled out a romance, claiming Horan is too young for her.
"He`s a bit young for me! What is he? Like 12?"
Horan has been previously linked to US `X Factor` judge Demi Lovato.