Irish heartthrob Niall Horan has revealed that he spent last night (March 17) writing a song with the lads from McFly after enjoying an evening at member Tom Fletcher's house. 

Writing on his official Twitter page tonight, One Direction's Horan explained that it was a creative hang out session and he even got to meet Fletcher's newborn son, Buzz: 

"Last night I wrote a song with @Dannymcfly @dougiemcfly and @tommcfly, dougie went home, tom got peed on by his son, me and danny had curry. Also I met little buzz fletcher last night! Soo cute! @MrsGiFletcher @tommcfly."

Fletcher also revealed that he had a great night, adding that he didn't mind being peed on by little baby Buzz: "Last night I wrote a song with @NiallOfficial and then went home and got peed on by my son. Loved both!"

Earlier this week, it was confirmed that One Direction will celebrate this year's Record Store Day by releasing a limited edition picture vinyl of their single 'Midnight Memories'. 

Watch One Direction's 'Miami Memories' video below: