"This day in 2001 was the first time I'd attended your birthday. It was a Sunday and my dad had allowed me to take his car for your party. And out of all your school friends you'd chosen to sit in my car. It was quite overwhelming for me as I was from an all boys school," Ayushmann wrote.

"Thank you for choosing me. I owe everything to you. Your compassion. Your empathy. Your character. Your sense of humour. Your sense of scripts. You," he added.

The actor called his wife "best human".

"Happy birthday to the best human I know! Umm.. (P.S - the first one was your latest pic in my phone album. Freshly clicked. Sorry didn't take your approval before uploading it, since you are sleeping. Thought it looked great.)"