Heather Graham and her boyfriend Jason Silva claim the key to a happy relationship is a lot of "lazy cuddling".

The 'Hangover' star and the TV presenter love to take time out of their busy schedule to spend time together in New York and both admitted laziness is a positive factor in their relationship.

Jason told US OK! magazine: "I take her to eat Venezuelan food in the East Village. There's a great place called Caracas. We do a lot of lazy cuddling."

Heather added: "Laziness, eating."

The loved up couple believe they are perfect for each other because they are quite similar.

Heather said: "He's awesome. He has a very positive, optimistic outlook. I think I do, too, so I think that helps, because anyone can get a bit stressed."

Jason agreed: "It's dopamine feedback lube of positivity going both ways. Rapturous love - ecstatic bliss."

However, the pair are not planning to have kids soon, despite Heather revealing she enjoyed working on a set full of kids in latest movie 'Judy Moody and the Not Bummer Summer'.

She said: "I mean, I feel like it could be really fun, but I sort of feel open to whatever happens, like if I do or if I don't.

"Well, my best friend has these little kids I'm totally in love with, so I love them."