'Mysterious Girl' singer Peter tweeted a sweet message to his other half on Thursday morning (17 July), saying: "Happy second anniversary gorgeous."
Pete's fans were quick to send their congratulations to the loved up couple, who welcomed their first child together in January 2014.
The pair knew each other for a few years before romance blossomed. They became engaged the day before Emily gave birth to their gorgeous daughter Amelia on 7 January.
Peter later told Reveal: "I wanted to be engaged before the baby was born. In fact, I'd have loved to be married before the baby was born. I'm quite traditional and by the traditions set by my mum and dad, you get married and then have kids.
"I know it doesn't always work like that, especially these days – but at least we're engaged now and Emily's my fiancée, not my girlfriend. It feels nice."
It's thought the couple will hold two wedding ceremonies, one a traditional English ceremony and the other a traditional Greek one, but there's no word yet on when they will take place.
Peter and Emily are both pretty busy right now. Not only have they a six-month-old daughter to look after, but Peter's promoting his new album Big Night and preparing for a tour, while trainee doctor Emily is finishing her medical qualifications.
Let's hope they get a bit of time out today to celebrate their big day! We wonder what Peter got for Emily?!
Happy anniversary, guys!
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Stars who gave birth in 2014 in pictures:
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