"Niall couldn't wait to see Amy ! '' star reunited with his student girlfriend !

Hand in hand with ­student girlfriend Amy Green, smitten Niall Horan’s Irish eyes are only looking in One ­Direction these days.

The pair were spotted taking a romantic stroll in London on Thursday after the singer jetted back from the US ­promo tour for new album Take Me Home.

A source said: “Niall couldn’t wait to see Amy. She has a normal life and doesn’t pay much attention to any fuss. He likes that.”

The Sunday Mirror ­revealed last month that Niall, 19, was dating Amy, 20. US ­reports have linked him to X Factor US judge Demi Lovato, also 20.

But our source added: “Everyone speculates about his love life, but he’s near the point where he doesn't care. Amy and him are great together.”