On last night's episode of MTV's "Teen Mom OG," Farrah Abraham struggled with the repercussions of her past when she was denied access to a white party in the Hamptons because of her character; Amber Portwood struggled to prove that she deserves custody of her daughter after overcoming her addiction; Maci Bookout put pressure on her live-in boyfriend to propose; and Catelynn Lowell celebrated her last night as a single woman during her bachelorette party.

Farrah Abraham

Abraham patched up things with her mother Debra after they had a heated discussion last episode, as previously reported by HNGN. She invited her mom on a business trip to Nevada where Abraham worked on promoting her mommy-daughter beauty line. After Nevada, the women jetted off to New York and Abraham's business partner invited her to a white party celebrating women, an event run by Lisa Vanderpump of Bravo's "The Real Housewives of Beverly Hills." Abraham was excited to attend but the event planner deemed her too "controversial" for the event. Abraham refused to accept that her sex tape might have been the reason she was excluded from the event; instead, she took her anger out on "Teen Mom" and her producers. After she hid in the bathroom to cry and her producer apologized, Abraham decided to attend the party anyway. She was kicked out less than five minutes after arriving.

Amber Portwood

It's been three years since Portwood's release from prison where she underwent an extensive rehab program, but she's still struggling to prove herself to ex-fiancé Shirley. Portwood learned that Shirley had been feeding lines to their 7-year-old daughter Leah, which caused the little girl to turn against her. Portwood filed for joint custody of her daughter, and in retaliation, Shirley reduced Portwood's current visits to the Indiana state minimum of every other weekend and three hours on Wednesdays. Shirley explained to his girlfriend, Kristina Anderson, that it was Portwood's choice to go to jail and leave their daughter behind, which is at the root of the custody agreement. "Everybody else in my life has accepted me now and everybody sees me as this different person but the only person who can't see it is Gary," Portwood said.

Maci Bookout

Bookout has been in a committed relationship with her boyfriend, Taylor McKinney, for the past three years. They own a home together and welcomed their first child together, daughter Jayde, last year. Bookout, however, is waiting for McKinney to take their relationship to the next level. Although she wasn't aware of it, McKinney was planning to ask her to be his wife; he was just struggling with the perfect way to propose. During a trip to Vegas with two other couples, things got awkward when Bookout called McKinney out for not proposing to her and pressured him to do so in front of their friends. In a chat with her girlfriends the next morning, Bookout explained that McKinney is overthinking the proposal. "We could be watching football, drinking, and you could propose," Bookout said.

Catelynn Lowell

Catelynn Lowell caved and allowed her fiancé Tyler Baltierra to go to a strip club during his bachelor party while she and her girlfriends went bar hopping on a party bus under the condition that the women would collect their men at the club at the end of the night. Lowell was nervous about going to the strip club because she didn't want to see another girl "dancing on her fiancé," but her friends and soon-to-be mother-in-law comforted her. To Lowell's relief, Baltierra was not surrounded by strippers when she arrived, and the couple reunited with a kiss; a stripper even vouched for Baltierra's good behavior. "You guys are so perfect," she gushed. "You have such a good man."

Watch a clip from the episode below.