Selena Gomez thinks Niall Horan's "amazing" - but insists they're not dating.

Selena Gomez

Selena Gomez

The 'Heart Wants What It Wants' hitmaker has been linked to the One Direction singer as of late after they were spotted supposedly kissing at a birthday party and later seen on a romantic stroll at Santa Monica Pier but Selena has spoken out to deny anything is going on.

When asked to clear up the rumours, she told Entertainment Tonight: "Oh my god! No [but] I love him, I always have. He's amazing."

Meanwhile, Selena has also been romantically linked to her ex-boyfriend Justin Bieber after he was seen serenading her at a bar last month.

But a source claims that she is still wary of anything happening and is "terrified" of trusting him.

A source said at the time: "Selena is still in love with Justin, but as exciting as it is for them to be back together, she's terrified to trust her heart again because he's hurt her so many times.

"Justin has this belief that Selena's cool with him hooking up with other women and that they don't need to be exclusive. She may say it's OK, but in reality it tears her apart to know he's seeing other girls."