Fighting back tears in an interview with BBC Radio 4 the multi-award-winning singer spoke about the special influence his "sensational" one-year-old daughter Teddy has had on him.
"She's difficult to talk about," said the emotional 39-year-old. "Everything I do is for her."
"Every time I open my mouth now in the studio it's a song about her, it would bore people to death but I could do a trilogy of albums about her."
"There's a reason for me to do everything now," added Robbie in the interview which will be broadcast on 11 November. "I wasn't going to have a kid and I wasn't going to get married then I met someone who was amazing and fell in love with her completely and I changed all my thoughts and feelings about that."