London, Aug 5 - British actress Sienna Miller understands why people might consider her not a very nice person but explains that it is all a part of her rebellious character.

The 27-year-old actress was in the news recently for an affair with millionaire Balthazar Getty, who was married and has four children. She now looks back on that and says it 'probably looked awful', reports dailymail.co.uk.

'I probably seem like not a particularly nice person, not a girl's girl,' Miller told GQ magazine.

However, she explained her behaviour by saying: 'I think if you put a camera in anyone's life and document it daily for six years, from the age of 21 to 27, there are going to be things that aren't always pretty.

'Those are the rebellious years, the years of self discovery. I've never been someone who has conformed and I think my response to that level of attention was to pretend it didn't exist.'

'I do think sometimes people get morally superior without understanding situations. And the situation I got into (with Getty) was not ideal but it happened and if I could go back I'd be more responsible,' she added.