20 of the biggest 'Bachelor' and 'Bachelorette' controversies of all time

• Both "The Bachelor" and "The Bachelorette" have many devoted fans.
• The shows also have their fair share of controversies.
• From the worst "Bachelor" star of all time to cast members with terrible pasts, these "Bachelor" and "Bachelorette" controversies surpass all others.

"The Bachelor" and "The Bachelorette" have been reality TV staples for a long time now. And though the "Bachelor" franchise has many fans, it also has quite a few controversies.

In fact, there have been so many scandalous situations that it might be hard to remember all of the things that happened before the more recent seasons of the shows.

Read on to see the moments on "The Bachelor" and its franchise shows that caused the most controversy.

SEE ALSO: 'Bachelor' off camera scandals

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Lincoln Adim's troubling history came out during the airing of Becca Kufrin's season.

There were a number of controversies during Becca Kufrin's season of "The Bachelorette." One such controversy came to light when reports surfaced while the season was airing that contestant Lincoln Adim had recently been convicted of indecent assault and battery.

Adim wasn't invited to "The Men Tell All," the typical end of the season reunion special, but viewers didn't know that until host Chris Harrison told Glamour after the show that he'd been purposefully left out since it wasn't addressed during the episode.

Warner Bros., the production company that produces "The Bachelorette," released a statement denying any knowledge of Adim's legal history.

"No one on 'The Bachelorette' production had any knowledge about the incident or charges when Lincoln Adim was cast, and he himself denied ever having engaged in or having been charged with any sexual misconduct," the statement said. 

Jason Mesnick broke up with Melissa Roycroft and proposed to runner-up Molly Malaney.

There have been lots of hated "Bachelor" leads over the years, and Jason Mesnick took the title after his season when he broke up with his finalist Melissa Roycroft and got back together with the runner-up on the season, Molly Malaney.

On the final episode of his season, Mesnick proposed to Rycroft, but on the "After The Final Rose" episode Mesnick and Rycroft broke up and Mesnick admitted that he still had feelings for Malaney. 

TV Guide reported that Mesnick and Rycroft did indeed break up prior to the taping of "After The Final Rose," but that Rycroft wasn't aware that Mesnick was going to try to fix things with Malaney until they were on set. Mesnick and Malaney eventually tied the knot.

When Arie Luyendyke Jr. broke up with Becca Kufrin and proposed to Lauren Burnham.

When "Bachelorette" season 8 contestant Arie Luyendyk Jr. returned to the franchise and proposed to Becca Kufrin in Peru, it seemed as though things might actually work out for them. Just a couple weeks after the proposal, however, ABC showed their on-camera breakup.

Luyendyk Jr. told Kufrin that he still had feelings for the runner-up, Lauren Burnham, and wanted to give things a go with her. The cameras followed Luyendyke Jr. to Burnham's family home where they reconciled. On "After the Final Rose," Luyendyke Jr. and Burnham appeared on stage together and Luyendyke Jr. proposed.

Kufrin went on to become the next "Bachelorette" star.

In 2018, Luyendyk Jr. and Burnham announced that they're expecting their first child and got married in a ceremony officiated by Chris Harrison in Hawaii on January 12, 2019.