Tarek El Moussa congratulates ex-wife Christina Haack on her 3rd engagement

Tarek El Moussa offered a civil congratulations to ex-wife Christina Haack upon learning of her engagement to Joshua Hall on Monday.

The Flip Or Flop star, 40, seem surprised by Haack's news, telling People magazine: 'We ​​just heard [about the engagement,] but congratulations!' 

His fiancée Heather Rae Young of Selling Sunset added: 'Wow, awesome! We just want nothing but happiness for [Christina and Josh] and nothing but happiness for the kids.'

'We're looking forward to the next chapter of everyone's lives,' the realtor, 34, went on.

Tarek and Haack share two children and continue to work on their HGTV show Flip Or Flip together.

But according to insiders, things have been less-than-friendly between the exes.

Back in July it was reported that Tarek went on a vicious on-set tirade, allegedly calling the mother of his children a 'washed up loser.' 

Last week, Tarek broke his silence on the nasty verbal tirade, telling E!'s Daily Pop, he had a 'disagreement' with his ex,

Though he did not get into details about the altercation, he did admit there were 'choice words said on both sides.' 

'You know Christina and I, we worked together wow for over 10 years now and we've been working together as exes for five years now,' Tarek began. 'As you can imagine, it can be stressful working with an ex and we did have an incident where some choice words were said on both sides and I'm sure we both wish the whole thing never happened.

'I mean, I certainly do, but I mean honestly since we got into that little disagreement a few months back, I've just decided that moving forward, never again. 

'I never want to go through that ever again, I never want her to go through that again, and I know one day our kids are going to be older and I want them to know that we still care about

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