The pair split up nine months ago, after which Jack has now revealed he had a "fling", resulting in his new-born Blossom being welcomed into the world.
And unluckily for Dani, the news broke as she was on a press tour for her new book and obviously, she got asked about the shock news.
Appearing on Rylan Clark-Neal's BBC Radio Two show, Dani, who met Jack on Love Island, was quizzed about the baby and was asked if she wished Jack well. She said, "100 per cent, congratulations. Everyone loves a baby."
However, she revealed she was not warned about the revelation, admitting she found out online like the rest of us.
She confessed, "No, of course not! No news. When everyone else found out, I found out. Listen, I wish them all the best. Congratulations."
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Jack announced the news yesterday, saying, "I’m normally a very open book and share most of my life on my social media. This blessing I chose not to...I knew for myself I needed personal time and to keep this part of my life private to prepare for this new responsibility and part of me that will change my life forever."
While initially keeping the mother's name out of the spotlight, Jack has now revealed his daughter's mum is 29-year-old health compliance officer, Casey Ranger.
He told The Sun, "Myself and Casey got together when we were both single."
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"It was a whirlwind romance and shortly after had the amazing news that she was expecting which we were both over the moon about.
"It didn’t work out romantically for us, however as I’ve said previously we are still great friends and have been for around 10 years."
He concluded, "Casey has been amazing throughout this whole process and I couldn’t of asked for a better person to co-parent our beautiful daughter Blossom with."
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