Orlando Bloom got a "new sense of responsibility" when his son was born.

Orlando Bloom

Orlando Bloom

The 'Pirates of the Caribbean' star says becoming a father to Flynn - who he has with ex Miranda Kerr - five years ago has helped make him more compassionate.

Speaking to Entertainment Tonight, he said: "Being a father, you know, you kind of have a new sense of responsibility. [My] level of compassion has grown."

Meanwhile, Katy Perry - who is dating Orlando - previously opened up about what she has learned from her partner.

She said: "He was a previous award recipient last year, so he knows it better than I. And he's been a UNICEF ambassador for over 10 years and I've only been a few years so he's kind of shown me some of the ropes. Everyone is a teacher in a relationship, that's how I see it now. We've taught each other a lot ...

"You could so easily just live in a bubble and be self-absorbed and make sure that it's just you, you, you. I have so much shine and spotlight, so it's nice to take that spotlight and move it to a need that needs it more and UNICEF has really helped me understand that."

Meanwhile, Orlando and Katy have sparked rumours they are engaged after Katy was spotted with a jewel on her wedding finger whilst out in New York City last month.

A source shared at the time: "She (Katy) walked with her left hand leading her, and bent her hand to show off the large sparkler to the cameras. They seemed proud to show off their happiness ... Katy's mood was better than [I] had seen before. Katy was happy and laughing, joking with Orlando and pals as they got into the car. They seemed proud to show off their happiness."