Married at First Sight's Season 6 couples are seven weeks into this extreme marriage experiment.

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After saying "I do" to a complete stranger, Season 6's three couples -- Jaclyn Schwartzberg and Ryan Buckley, Shawniece Jackson and Jephte Pierre, and Molly Duff and Jonathan Francetic -- have certainly come a long way.

However, blowout arguments and frequent tiffs have taken a toll on these couples, and they are days away from making one of the most important decisions of their lives -- whether to stay married or get a divorce.

It's make or break time. As viewers saw in last week's episode, Molly and Jonathan's romance is pretty much over.

Shawniece and Jephte, on the other hand, seem to be the strongest couple on the show. Not only do they respect and care for each other, but they added a puppy to the family!

On the next episode of Married at First Sight on Lifetime, the couples will be forced to really examine their relationships. Shawniece and Jephte have both said this season there is potential to fall in love with each other, but after all they've been through, can their feelings truly grow into love?

Check out the exclusive Reality TV World preview clip below in which Jephte expresses fear and concern to Shawniece about getting stuck in a loveless marriage long-term.

Married at First Sight's next sixth-season episode will air tonight at 9PM ET/PT on Lifetime.

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