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"Amanda Seyfried has revealed that she didn&amp;#039;t realise her then-boyfriend Dominic Cooper was still in a relationship when they started seeing each other. The actress began seeing Cooper after they met on the set of Mamma Mia! and admitted that she felt &amp;quot;foolish&amp;quot; when she found out he was still seeing his ex. She explained to Elle: &amp;quot;I was just kind of foolishly thinking that the two of them were done and Dom and I were involved.  &amp;quot;But we weren&amp;#039;t really as involved as I thought. So I got my heart broken pretty hard. And then it took a long time for us to break up again. After that, it&amp;#039;s really hard to open myself up to a new person. Really hard.&amp;quot; The 25-year-old explained that they both got &amp;quot;carried away&amp;quot; while they were starring in the musical. She added: &amp;quot;[It is] one of the easiest things in the world. You&amp;#039;re both open. You&amp;#039;re put in a situation where you have to make out with each other. It&amp;#039;s easy for things to get carried away.&amp;quot; Seyfried also addressed rumours that she is dating Ryan Phillippe, cryptically saying: &amp;quot;I&amp;#039;ve been &amp;#039;seen&amp;#039; with him.&amp;quot; "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/showbiz/news/a307824/seyfried-left-heartbroken-over-cooper/>