Jennifer Aniston and Justin Theroux have been dating for more than a year

Justin Theroux is feeling pretty smitten at the moment.

The actor feels fortunate to be loved-up with his Wanderlust co-star Jennifer Aniston, 43. 

'I always go to bed thinking I'm the luckiest guy in the world,' says Justin, 40.

But Now has learnt that Justin is having a crisis of confidence and thinks he's 'not good enough' for the former Friends actress.

It comes because Jen is insisting Justin sells the £470,000 2-
bedroom house he bought in Hawaii in 2007 because she wants to get something 'bigger and better'.

'He's adapted so much of his lifestyle - from his wardrobe to his interior décor tastes - to make Jen happy,' a friend of Justin's tells us.

'She's even replaced all his sheets and linens 
in his New York apartment.

'Now she's hunting around for 
a Hawaiian holiday home as she thinks his existing one there is too small.'

SEE PICTURES Jennifer Aniston Style File>>

SEE PICTURES Celebrity hair: Jennifer Aniston's styles over the years>>

SEE PICTURES Jennifer Aniston goes topless for perfume ad>>

SEE PICTURES Jennifer Aniston launches new fragrance in London>>

SEE PICTURES Jennifer Aniston shoots new movie>>

Esme Riley