The Winner Takes It All!

From on-screen lovers to real-life couple!!!!

Mamma Mia co-stars Amanda Seyfried and the super hot Dominic Cooper are getting it on!

The couple are just going public with their romance, after Cooper just dumped his long-term and non-famous girlfriend for Seyfried.

Amanda and Dominic just spent the holidays together in London and on Saturday they were spotted shopping at Barney’s in Beverly Hills.

Dom is definitely a catch. Lucky bitch!

Homewrecker????

[Image via WENN.]