Longtime 90 Day Fiancé viewers are aware of how several storylines in the franchise often feature couples where one partner is hiding a big secret from the other. These secrets are teased from the couple’s introductory episode itself, often revealed bit by bit, until the show reaches its finale. Sometimes the secret is pretty much harmless and can be swept under the rug, but at times, the producers choose cast members with such baggage that when revealed, they cause jaws to drop.

https://screenrant.com/90-day-fiance-stars-kept-secrets-from-partners/