Kim Jong Min is preparing for his upcoming wedding with the help of his "best friend" Haha on These Days Men's Life - Groom Class (Groom Class).

In the 153rd episode, Kim Jong Min appoints Haha as his groom planner and receives firsthand wedding advice ahead of his big day on April 20th.

On this day, Kim Jong Min brings two drinks and heads out to meet someone, saying, "My wedding is next month, but I don’t know anything about the venue or location. But I’m not worried—I have a reliable groom planner!" He then calls upon his 20-year friend Haha for help.

Kim Jong Min describes Haha as "a passionate romantic and an event master," adding, "He helped me a lot from the very beginning of my relationship to marriage," revealing that Haha played a major role in his upcoming wedding.

Later, Kim Jong Min makes a surprise appearance on a radio show hosted by Haha. While Haha welcomes him, he hesitates and says, "What should I do... Ailee is getting married on the same day, and I already got an invitation." Kim Jong Min, who has yet to send out his own invitations, sighs, "That’s right. I even told Ailee to send me an invitation, and then I ended up setting my wedding for that day. What a nuisance!" He appears flustered, unsure of how to handle the situation.

Watching the scene unfold from the studio, entertainment director Moon Se Yoon jokes, "I wonder which venue the after-party will be at... It’s going to be a competition that day!" making everyone burst into laughter.

Haha then asks, "So where is Shinji going?" referring to Koyote member Shinji. Kim Jong Min replies with a bitter smile, "I think she’ll go to Ailee’s. They’re so close." He then hands Haha the very first wedding invitation, saying, "You're the first." Touched, Haha opens the invitation.

The Studio Mentor Corps admire the elegant design, exclaiming, "It’s so pretty!" Seizing the moment, Kim Jong Min suddenly stands up in the studio and starts handing out invitations to everyone. In particular, he gives two invitations to Lee Da Hae—one for her and one for her husband Se7en—causing the studio to erupt in laughter.

With Kim Jong Min and Ailee’s weddings coinciding on the same day, all eyes are on Haha and his wife Byul—whose wedding will they attend? 

SEE ALSO: Ailee to release new mini-album ‘(Me)moir’ on March 20 after three-year hiatus