Emma Roberts and Evan Peters' close pal has confirmed the couple are engaged.

The 22-year-old actress and 26-year-old actor - who star opposite each other in 'American Horror Story' - have yet to comment on reports they are set to tie the knot but photographer Tyler Shields, who has snapped intimate pictures of them on numerous occasions, verified the happy news as he publicly congratulated them on Twitter Monday (06.01.14).

He posted a photo he took of the couple, which shows Emma falling in the air with Evan standing below ready to catch her, and tweeted: ''Congrats to @RobertsEmma and Evan Peters for getting Engaged this was the moment I knew he really loved her!''

He added: ''Congrats to @robertsemma on her engagement love you! It's important to marry someone who is there to catch you when you fall . . .''

Evan popped the question with a pink, gold and diamond ring over the Christmas period in New York City and the couple then celebrated by ringing in the New Year in London.

The duo first met on the set of film 'Adult World' and Evan previously admitted they were instantly attracted to each other, even though they didn't get together until 2012.

He said: ''I think we both had crushes on each other but we didn't know it. As soon as the movie was done we started hanging out and everything was perfect.

''She's amazing. She's so much fun. She has a great laugh, smile, she's a great kisser. And she's gorgeous.''

However, the path of love has not always been smooth for the couple, as in July last year Emma - niece of actress Julia Roberts - was arrested when they had a fight in Montreal, Canada which left him with a bloody nose and a bite mark, and her with bruised legs.

The police intervened after somebody else in their hotel had called for help, but Emma was released without charge.