Robert Pattinson is having the best sex of his life

Los Angeles - Robert Pattinson is ''in heaven'' with FKA twigs.

The Remember Me actor who has been dating the 26-year-old for three months  is reportedly really enjoying the intimate side of the couple's relationship.

A source revealed to HollywoodLife.com: ''Rob says he is having the best sex of his life. Apparently, she's very flexible and very uninhibited.

''He's in heaven. He's just fully in lust with her. He can't keep his hands off her. He even makes out with her in public, which is not usually his style. It was never that way with Kristen Stewart; his ex-girlfriend, but this girl is loosening him up.''

Meanwhile, the 28-year-old actor's friends are believed to be ''bracing themselves'' for an engagement announcement.

Another source revealed: ''Robert has been looking at rings although an actual wedding is a long way off.

''He knows things are moving fast, but he wants to show his commitment. Everyone is bracing themselves.''

The Twilight star is expected to visit the Two Weeks singer, real name: Tahliah Debrett Barnett  at her family home over the festive period.

The source added: ''Rob will be visiting Tahliah and her mum in Gloucestershire over Christmas.

''He's on a charm offensive as he really sees this relationship going the distance.''

Back in September FKA Twigs took to twitter to tweet her disgust at racist comments she was getting for dating the actor:

I am genuinely shocked and disgusted at the amount of racism that has been infecting my account the past week.

— FKA twigs (@FKAtwigs) September 28, 2014

Racism is unacceptable in the real world and it's unacceptable online.

— FKA twigs (@FKAtwigs) September 28, 2014