Wedding bells finally rang during the first part of the two-hour season finale for Season 3 of TLC's "90 Day Fiancé," as four of the six couples tied the knot. Then, Mark and Nikki, Loren and Alexei, Fernando and Carolina, Kyle and Noon, Melanie and Devar and Josh and Aleksandra all returned for a tell-all special, with "Today" host Erica Hill, where they sat down to dish about their relationships and married life — and one couple even made a pregnancy announcement.

Mark & Nikki
After Mark all but pressured Nikki into signing what her lawyer said was a very one-sided prenuptial agreement, the couple hopped on a plane to their very private, beach wedding ceremony in Hawaii — so private that the only other person on the beach was the officiant! Prior to jet-setting off to their tropical wedding, the 58-year-old Baltimore native cooked a birthday meal for Nikki's 20th birthday and invited his 21-year-old daughter to help celebrate. At the celebration, Mark proposed to Nikki again and replaced the zip tie he originally gave her with a diamond solitaire ring. During the tell-all, host Hill grilled the couple and even scolded Mark for speaking for his young Filipino wife. They both took turns defending their love, despite the 20-year-plus age difference, and Mark explained why he prefers younger women (he says they come with "less baggage"), while Nikki appeared visibly unhappy next to him. He also defended the prenup, and rudely dismissed his naysayers on Twitter as overweight, middle-aged women. He also didn't hide his indifference when Nikki clearly expressed jealousy as another couple announced its pregnancy, which was a topic of an argument in a previous episode since Mark made it clear that he did not want children.

Fernando & Carolina
Another couple with an age difference — Fernando is 39 and Carolina is 22 — wed in a small ceremony in the yard of the Miami home Fernando shares with his parents. Since Carolina's family couldn't attend the wedding, a laptop sat on the first chair in the front row of seats so they could watch the ceremony via Skype from Colombia. Before the wedding, Carolina was able to finally bond with Fernando's overbearing mother. During the tell-all, Fernando was forthcoming about the fidelity issues in his relationship with Carolina, which consisted of an email conversation with an ex-girlfriend. But Carolina said she trusted her husband. The couple also revealed they would like to start a family in the next two years.

Kyle & Noon
This couple wed during the previous episode in a traditional Buddhist ceremony in New Orleans, where Kyle lives. During the tell-all, it was clear the couple is still very much in love. Kyle opened up about his non-existent relationship with his parents and explained he's now finding his own sense of family with Noon. However, the couple isn't ready to make any new additions to their family just yet, as they're hoping to travel and spend more time together before having children.

Alexei & Loren
The couple had a beautiful Jewish wedding ceremony in Miami a few days after Alexei forgave Loren for going to a strip club and receiving lap dancers from male strippers for her bachelorette party even after he specifically told her not to go. At the traditional reception, they danced the hora together. During the tell-all, Loren defended herself from social media users who called her a drama queen, and Hill questioned her about her selfishness in the relationship. The couple also revealed they almost didn't attend the tell-all taping because they didn't want to relive the fight that erupted before the wedding.

Devar & Melanie
Melanie's friends and sister Bev didn't approve of Devar during the 90 days he was in America because they assumed he wanted to just marry Melanie for a green card so he could work in the United States and send money back home to his family. But Devar shed tears during the ceremony and Melanie's young son gave a sweet speech honoring his new stepfather, and that was enough to change Bev's mind about her new brother-in-law. During the tell-all, the couple addressed their interracial marriage and how they've been treated in Melanie's small Pennsylvania hometown. Melanie also got emotional when Hill aired a clip of Devar and her son and explained how important their relationship was to her. Devar also expressed the desire to have children with Melanie in the future.

Josh & Aleksandra
The couple, who wed in a Mormon ceremony in a previous episode, both seemed quiet during the tell-all. Hill asked Aleksandra about the big decision she made when she converted to Mormonism, but Aleksandra explained that she had already decided to convert when she met the missionaries in Prague, where she was spending her time drinking and go-go dancing at clubs. That's also when she met and fell in love with Josh and decided to move to America to be with him. Josh and Aleksandra dropped the biggest news of the night when the young couple announced she was pregnant. Aleksandra said that, so far, she hasn't been experiencing morning sickness or any of the other symptoms associated with early pregnancy, and Josh said he was shocked when he found out his wife was pregnant, as he's still in school. But the pair looked happy with their new bundle of joy on the way.

Hill also announced that a fourth season of "90 Day Fiancé" is scheduled to air in 2016.