In a heartwarming surprise that captivated viewers, MBLAQ's Thunder bravely proposed to former Gugudan member Mimi during the live broadcast of KBS2's 'Second House 2' on July 27. 

The touching moment was made possible with the help of veteran actor Choi Soo Jong, who lent a hand to Thunder's romantic gesture.

Choi Soo Jong suggested the thoughtful plan to Thunder, advising him to prepare something that would leave a lasting impression on Mimi. Together, they decided to create a simple yet beautiful setup perfect for a heartfelt proposal. 

Utilizing items found at home, they fashioned a beam projector screen from plain fabric and set the mood with LED candles and light-up tulips.

As Mimi returned from an outing with Ha Hee Ra, she was taken aback to find herself immersed in a touching video of her cherished memories with Thunder. The heartfelt visuals stirred deep emotions, and when Thunder serenaded her with his heartfelt song, tears welled up in Mimi's eyes.

Unable to contain his emotions any longer, Thunder bravely confessed his feelings, saying, "I hope my sincerity comes across. Let's get married. I love you." This touching moment brought tears to the eyes of not only Choi Soo Jong and Ha Hee Ra but also everyone witnessing this genuine display of affection. 

Overwhelmed with joy, Mimi responded to his proposal with a kiss, sealing their love and commitment.

The couple, who had been in a relationship for four years, recently made their relationship public on 'Second House 2'. To the delight of their fans, they also announced their decision to tie the knot through a heartwarming post on Instagram.

Thunder, known for his role as a rapper in MBLAQ since his debut in 2009, is often recognized as the younger brother of Sandara Park from the beloved group 2NE1. On the other hand, Mimi, who made her debut with Gugudan in 2016, has been captivating audiences not only with her musical talent but also as an accomplished actress.