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Rob Kardashian won't break up with Blac Chyna.

Rob Kardashian won't break up with Blac Chyna.

Rob Kardashian allegedly won't break up with Blac Chyna.

The 29-year-old Arthur George sock designer - who has recently deleted all images of his fiancé from his social media - allegedly won't call it off with his partner, with who he is expecting his first child with, and would need to endure " a lot" before deciding to split up.

Speaking to PEOPLE about the couple's love life, a source said: "It's hard to see Rob and Chyna actually splitting. Rob is looking forward to becoming a dad. It would take a lot for him to break up with her.

"They are both very excited about the baby."

This news follows reports the couple had a huge argument during filming 'Keeping Up With the Kardashians' after Rob discovered suspicious messages on his partner's phone.

However, it is believed the reality television star has a short temper and reacts impulsively, but will calm down in due course.

The source explained: "They filmed over the weekend and had an argument.

"Rob tends to blow up and react very fast."

And it is believed Rob and Chyna - who announced they were expecting their first child together in May after they announced their engagement only one month earlier after a short period of dating - are rushing their romance too quickly.

The source said: "They have rushed their relationship so much."

Meanwhile, Blac - who already has three-year-old son King Cairo with her former partner Tyga, who is now dating the youngest daughter of the Kardashian/Jenner family Kylie Jenner - has kept pictures of her with Rob on her Instagram account, although she has failed to share anything on her site for two weeks.

And the couple are set to launch their own TV show 'Rob and Chyna' on E! later this year.