Just when you thought things were finally looking up for Rob Kardashian, it looks like things have made a turn for the worst. Apparently, there's a new report that says even though Rob has managed to lose a ton of weight in recent weeks, his diet has been nearly destroyed thanks to his fiancé Blac Chyna and her pregnancy.

According to Star Magazine on Friday, the reclusive reality television star has been having a hard time shedding those excess pounds just because he's been eating what Chyna has been eating, and that sure hasn't been helping his situation.

Appanrently, Chyna has helped motivate Rob back into the gym and has even scheduled a meal plan for him, which has helped him shed over 50 pounds. But now that she's put the focus on her pregnancy, many sources close to the couple say that Rob's diet plan has "crashed and burned" as he simply doesn't know how to do it all himself.

One source even dished, "Rob's been eating like a pig ever since he found out the news. He's thrown in the towel with the healthy eating and exercise has gone out the window."

The insider added, "He's taken 'eating for two' literally. It's such a shame because he was doing so well."

The couple have announced both their engagement and their pregnancy in the last several weeks, even though they've only been dating since the beginning of the year. So far, Rob and Chyna have not set a wedding date nor have they announced their baby's due date, either.

Tags: blac chyna rob kardashian