
Following the dissolution of Absolution in WWE, Mandy Rose and Sonya Deville continued their alliance as a tag team. Their first match as a team on SmackDown took place on the June 5, 2018 episode of SmackDown, where they lost to Asuka in a handicap match. Rose and Deville sporadically teamed together throughout 2018 and lost their matches to combinations of Asuka, Becky Lynch, Charlotte Flair, and Naomi before picking up their first win on the December 4 episode of SmackDown by defeating Asuka and Flair. They also represented Team SmackDown against Team Raw in a five-on-five women's elimination match at Survivor Series, which Team SmackDown lost. Rose and Deville would then begin feuding with Naomi, which led to Rose flirting with Naomi's husband Jimmy Uso, which led to the two sides exchanging wins with each other in singles competition.
On February 17, 2019, Rose and Deville participated in an Elimination Chamber match for the new Women's Tag Team Championship at the namesake event, which was won by The Boss 'n' Hug Connection (Bayley and Sasha Banks). Soon after, Rose and Deville began a feud with Asuka over her SmackDown Women's Championship, which Rose failed to win at Fastlane. Dissolution was teased as both of them had accidentally cost each other matches against Asuka during the feud but maintained their alliance.
On the August 5 episode of Raw, Rose and Deville participated in a fatal four-way elimination match for the Women's Tag Team Championship against the defending champions The IIconics (Billie Kay and Peyton Royce), The Kabuki Warriors (Asuka and Kairi Sane) and the team of Alexa Bliss and Nikki Cross. Rose and Deville eliminated IIconics from the match but were eliminated by Kabuki Warriors. Bliss and Cross went on to win the match. Shortly after, Rose and Deville's team was named "Fire and Desire" and they defeated Bliss and Cross in a non-title match on the September 3 episode of SmackDown, which earned them a title shot against Bliss and Cross for the Women's Tag Team Championship at Clash of Champions, which they lost. On the November 8 episode of SmackDown, Fire and Desire lost to Carmella and Dana Brooke in a qualification match for Team SmackDown at Survivor Series. Fire and Desire would then briefly feud with Bliss and Cross for the next two months which led to both teams exchanging wins. On the March 6, 2020 episode of SmackDown, Fire and Desire wrestled their last match as a team in which they defeated Carmella and Dana Brooke.
In late 2019, Rose got involved in a romance storyline with Otis. Rose agreed to go on a Valentine's Day date with Otis on the February 14, 2020 episode of SmackDown, but Dolph Ziggler appeared in Otis's place during the date, which resulted in a romance between Rose and Ziggler. The storyline then evolved into a love triangle involving a feud between Otis and Ziggler over Rose. It was revealed on the April 3 episode of SmackDown that Deville was working with Ziggler to keep Otis from Rose, thus marking the breakup of Fire and Desire. On April 5 at WrestleMania 36, Rose interfered during a match between Otis and Ziggler by attacking Deville, who was at ringside, and Ziggler, which helped Otis score the victory.
This resulted in a feud between Rose and Deville, during which Deville branded her selfish out of jealousy and attacked her, vowing to "ruin her life". Deville would cost Rose, a Money in the Bank qualifying match against Carmella on the May 1 episode of SmackDown. This led to a match between Rose and Deville on the May 8 SmackDown, which Deville won. On the May 22 episode of SmackDown, Rose and Otis were defeated by Deville and Ziggler in a tag team match. On the August 14 edition of SmackDown, Rose challenged Deville to a hair versu hair match at SummerSlam, which the latter accepted. A week later, the stipulation was changed to a Loser Leaves WWE match. On August 23, Deville lost to Rose at SummerSlam, thus forcing Deville to leave WWE.