Earlier this month, Ryan welcomed his first child with wife Blake Lively.
And now settling into his new role as dad, it seems the Definitely Maybe star is loving every minute.
Speaking to People at the Sundance Film Festival in Utah over the weekend, Ryan opened up on how he is finding his parenting duties so far.
"It's amazing that you can be that exhausted and that happy at the same time," he said.
Proving to be a hands on dad, the 38-year-old said he has jumped right in when it comes to looking after his baby girl.
He even joked he has tried his hand at breastfeeding, claiming it didn't go so well...
Ryan added: "It [was] frustrating for the baby and frankly disturbing for me."
Meanwhile, Gossip Girl actress Blake has said becoming a mum has been the "happiest time of her life".
Admitting she has always felt like a mum, the blonde beauty went onto say she "can't believe" she now gets to experience actually being one. Cute!
Following their daughter's early arrival, it is reported Ryan and Blake have named their baby girl Violet.
However, known for being notoriously private the couple are still yet to confirm this.
Blake first announced she was expecting by discreetly posting a photo of herself sporting a baby bump on her Preserve website in October last year. Her pregnancy news came two years after she and Ryan tied the knot.
The pair wed in September 2012 in South Carolina.
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