Love Island USA, Episode 19

New host Ariana Madix enters the Villa to reveal the singles coupling up for the first time.

The Islanders begin to settle, but secret kisses are shared; the bombshells test early connections.

Drama unfolds in a game of "Higher or Lower"; Ariana Madix returns for a surprise recoupling.

Following a dramatic dumping, the Islanders play "Vacation Vixens;" relationships are reevaluated.

Maura Higgins discusses the first week in the Villa with special guests, including Ariana Madix.

Ariana Madix crashes a lingerie party with two bombshells; one couple enters the friendship zone.

The new bombshells invite boys on romantic dates; tension in the Villa reaches new heights.

The bombshells' dates send the Villa into a frenzy; a steal leaves two Islanders vulnerable.

The Islanders pucker up for the "Kissing Booth"; an unfamiliar smooch has the girls swooning.

The new bombshell is busy getting to know the girls; in a recoupling, it's the boys' turn to choose who they want to couple up with, resulting in one girl getting dumped from the island.

Maura Higgins chats with the latest dumped Islander and special guests on the villa's second week.

The couples compete in "Burning Love"; two Islanders are eliminated in a dramatic dumping.

One Islander chooses whether to stay or leave; the girls are left to defend their decision.

The villa is transformed into a nightclub for "Stick or Twist;" three bombshells crash the party.

The new bombshells sneak away with an Islander of their choosing; drama reaches new heights.

The boys show off in the workout-themed challenge, "Flex Appeal;" a recoupling sends one boy home.

Maura Higgins discusses the latest drama with Ariana Madix and introduces the Casa Amor bombshells.

The new couples spend time together; America's vote for the most compatible couple is revealed.

The ultimate test begins as Casa Amor opens its doors; couples are tempted in "Spin the Bottle."

Casa Amor and the Villa face off in "Raunchy Races"; new connections threaten the current couples.

The Villa takes on Casa Amor in the food transfer challenge; the girls in the Villa receive a video.

As Casa Amor ends, the Islanders must decide whether to stay loyal or recouple with someone new.

Maura, Ariana and Cely discuss the drama of Casa Amor with Kay Kay Kalore and Johnny Bananas.

Tensions reach a boiling point after the explosive recoupling that left five Islanders single.

The Islanders find out what America thinks of them in a messy game of "You Drive Me Crazy."

The drama heats up as the Islanders attend "Movie Night" and find out what went on during Casa Amor.

"Movie Night" concludes; a surprise recoupling results in three Islanders being dumped.

The new bombshell chooses three girls for dates and makes a decision that could change everything.

Katie Maloney joins Maura and the panel to discuss the latest breakups, make-ups and dumpings.

The Islanders unleash their competitive spirits as they face off in a "Summer Sports Day" challenge.

The Islanders show off their sexiest moves in "Hearts on Fire;" America's votes are revealed.

The Islanders are tested on how well they know their partners in the game "Mr. and Mrs."

Three of the remaining couples have emotional reunions with their loved ones via video chat.

The couples head to the altar in "Newlyweds"; the final four couples chosen by America are revealed.

Maura discusses the final four couples with Ariana, Cely and last year's winners Hannah and Marco.

The remaining four couples go on their final epic dates around Fiji; America's votes for their favourite couple are revealed, and the season's winners are announced.