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Conor McGregor has risen quickly from the streets of Dublin to become a sporting superstar.

But he has a special somebody to thank for keeping him going through the hard times - girlfriend Dee Devlin.

The pair have been together for more than nine years and remain besotted despite a complete change in their lives following McGregor's success.

Last year they became parents for the first time when Dee gave birth to Conor Jr and Dee is now expecting the couple's second child.

McGregor, who swapped the Octagon for the boxing ring in order to face Floyd Mayweather in August 2017, has now announced that he is retiring from UFC.

But he has yet to get down on one knee and propose to Dee, even though the couple seem to be as solid as ever, despite the often turbulent nature of McGregor's life outside the cage.

Here, we provide everything you need to know about one of the most important members of his back-room team...

(Image: Getty)

1. Dee hails from Walkinstown in Dublin

Devlin originally hails from Walkinstown, Co Dublin and like McGregor, is incredibly proud to be Irish.

After one of his many victories in 2015, Devlin posted on Twitter: "The Irish are truly the best supporters in the world!"

(Image: Dee Devlin/Instagram)

2. She has stuck by McGregor through everything

McGregor and the 30-year-old Devlin have been together since long before his UFC stardom.

The fighter admitted he is incredibly thankful to his longtime love for sticking by him through everything.

He said: "My girlfriend worked very hard throughout the years and stuck by me when I had essentially absolutely nothing.

"I only had a dream that I was telling her.

"For me to be able to take her out of work, give her everything she's ever wanted and to travel the world with her fills me with pride. It keeps me going."

(Image: Instagram)

3. The couple have been together for more than nine years

The loved-up Dublin couple have been together through thick and thin, going out for almost a decade.

Conor has said: "[Dee] will tell you exact dates.

"We've been together a long time. She's been through it all with me."

4. She's his number one fan

After McGregor's incredible win against Chad Mendes in 2015, the Dubliner posted a tribute to her boyfriend on Instagram.

She said: "To say that I am proud is a MAJOR understatement!

"I am so on cloud nine right now I can't even put it into words!

"Thank you to every single person who made the trip out to Vegas to support Conor last night! The place was absolutely buzzin!

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"And to all of the fans at home who also had a big part to play in making this event so special.

"Hours upon hours, years upon years of hard work and complete dedication to his craft accumulated last night.

"I am so grateful right now it's overwhelming. We did it babe!! I love you more than anything."

5. The pair like to celebrate in style

McGregor has previously spoken of how he loves to spoil his partner and last year, the Walkinstown native shared a stunning pic with her Twitter followers of another expensive gift - a £20,000 Cartier watch.

Posting the gorgeous Tortue watch online, Dee said: "OMG".

And following McGregor's win against Mendes, Devlin shared a snap with her Instagram followers of what the couple splurged on to celebrate.

And McGregor celebrated his other half's birthday in style in Las Vegas.

The Notorious and his supportive girlfriend hit the tiles at Las Vegas club Marquee and in a video posted to Sqor by the Irish MMA superstar , a huge cupcake with a sparkler and bottles of champagne are brought to the couple's area by club hostesses.

6. Devlin always knew The Notorious would be a success

When asked about what she thought about McGregor's success, Dee said it was only a matter of time before her partner reached the next level.

She added: "He's always been super confident, we always knew this was going to happen - it was nearly like we were predicting the future.

"It's weird for me to say but we just always knew he was going to get to this level and every few months it just keeps going and going and going and the sky is the limit."

7. The loved-up pair work together

To support Conor on the road, Dee quit her job to be able to travel more.

He hired her on as an official member of his team, where she currently manages his finances.

On his girlfriend's new job, McGregor said: "She does not work anymore, I hired her to the business. She works for me now and collects the cheques."

She also helps the 29-year-old fighter train.

Devlin posted a picture on Twitter of the star training in Vegas.

She captioned the photo: "1am in Vegas and The Notorious is climbing ropes and pushing prowlers in a carpark!"

8. McGregor says he owes her his success

The UFC lightweight said his career would likely have turned out very differently if it wasn't for Devlin.

The fighter gushed: "My girlfriend has been there since the start. She has helped me throughout this career

"If It wasn't for her, I probably wouldn't be where I am today."

(Image: Getty)

In 2013, McGregor said that he 'one hundred per cent' agrees that behind every great man is a greater woman.

Speaking to VIP Magazine, he said: "Everyday since I started in this game, she’s supported me.

"She’d drive me to the gym, and she’d listen to all my dreams. I wouldn't be doing this if it wasn’t for her.

"I’m doing all this for her."

9. Dee still gets nervous watching him fight

Dee is usually found at cage-side supporting her fighter boyfriend.

(Image: Getty)

Speaking to Underground MMA, she admitted: "I find I'm more nervous now - the first time I went to see Conor fight there was 50 people in a room, and I thought 'There's no way you can be more nervous than this' but each time it's just getting that more and more nerve-wracking.

"Especially watching someone you care about getting in the ring - it definitely gets me in the gut I have to say."