The British reality star is said to have left the Little Mix singer ''heartbroken'' as he's decided to give things another go with his 'The Only Way Is Essex' co-star.
However, they are said to be keeping things low-key to ''avoid backlash'' as he is believed to have dumped the 25-year-old beauty - who was previously engaged to Rixton's Jake Roche - via a text message.
A source told The Sun Online: ''Chris and Amber are boyfriend and girlfriend again.
''It's been a long time coming but they've decided to give things another go.
''They've been dating on-and-off camera but have told pals they're keen to keep the status of their relationship quiet to avoid a backlash.
''Meanwhile Jesy has been left broken-hearted after having to deal with another very public break-up.''
Chris recently hinted he was in love with another woman during his relationship with the 'Shout Out To My Ex' hitmaker.
And he also admitted that he was never truly over the emotional heartbreak of his split from Amber.
He said: ''I think these past weeks make me realise that I thought I was over her, I did think that. And maybe I'm not so sure any more.''
Amber was recently hospitalised with a mystery illness, but Chris admitted the situation has helped him to realise what she means to him.
He explained: ''I am now single and I see Amber ... I see her at the hospital. She was quite ill. So I messaged her on Twitter and just said 'I didn't like seeing you lie that. I hope you get better'. Despite what's gone on, her being in my life makes me happier. That's the bottom line.''
And Chris - who dated Jesy from February until earlier this month - had said he hoped that he would eventually get back with Amber.
He said: ''I feel like if I kept putting that to the back of my head, two or three years down the line if she didn't find anyone else I would regret not doing stuff like this.''
Janelle Monáe parties and drives with her girl squad in the video for her latest single 'Crazy, Classic, Life', taken from her album 'Dirty...
Continuing the softer sound of their 2015 release 'That's the Spirit', BMTH are about to release 'Amo' (January 25th 2019) featuring their newest...
To coincide with the new BBC mini-series adaptation of leporine epic Watership Down, Sam Smith has unveiled a new single entitled 'Fire on Fire'.
Her first single since leaving the jungle on 'I'm a Celebrity... Get Me Out of Here!', Fleur East drops the super-choreographed video for 'Favourite...
Dropping the video for his latest album's second single, 'Excuses', is Olly Murs just months after the release of 'Moves' featuring Snoop Dogg.
Professor Green and Rag'n'Bone Man have teamed up for a heart-wrenching video for their single 'Photographs'.
He released 'Everythang's Corrupt' last month, and now Ice Cube has dropped a video for the record's third single 'That New Funkadelic'.
Dappy has unveiled a new stripped down number entitled 'Count On Me' more than six years after the release of his debut solo album.
Written and directed with a rakish swagger, and featuring two full-on performances from Tom Hardy,...
After the 2011 black comedy The Guard, Brendan Gleeson reteams with writer-director John Michael McDonagh...
After the painfully unfunny 2003 original, a franchise was highly unlikely. And yet the spoof...