Sienna’s, now ex boyfriend, Rhys Infas was looking for ‘incriminating evidence’ once he found out Sienna started seeing her ex – Matthew Rhys- again. A source said:

“Sienna broke the news at the weekend in a call from Prague. Things have been awkward for a while after she caught Rhys going through her text messages. She went bananas and Rhys said he was looking for what he called ‘incriminating evidence’. He has been giving her a hard time lately, questioning her commitment to him and the time she puts into the relationship.”

Source: The Sun