[5] After ending their promotions for "Boyfriend", the group followed-up with the song "You & I", which received a more positive response from music critics.

On May 2, Hyunseong released a solo song, "Only You", for the original soundtrack (OST) of The King 2 Hearts.

They held 5 concerts at the Tokyo Dome City Hall from December 22 to 24 with a total of 12,500 fans in all.

The members started shooting for the reality series this December, and the first broadcast was released on January 4, 2013, at 11 pm KST.

[21] On 23 May, Starship Entertainment announced that Boyfriend would be making a comeback with a new digital single entitled "On & On" on 28 May as a surprise gift for celebrating the group's second anniversary in music industry.

On May 30, Boyfriend's Donghyun has been cast to play the lead male role in musical "Thousandth Man."

[23] On 14 June, Jeongmin was rushed to a hospital after their schedule in Japan, and was diagnosed with acute appendicitis and ordered to rest for 17 days after being discharged.

The single is entitled 'Pinky Santa' which obviously utilizes color pink, but pinky also means the smallest finger which is used when promising.

[26] Boyfriend successfully wrapped up their solo concert in Puerto Rico, becoming the first-ever K-pop group to do so.

On March 8, the group performed in front of 1,700 fans at the 'Centro De Bellas Artes Luis A Ferre'.

[31] In the following month, they began their first world tour, "The First Chapter: "Bewitch" starting in Taiwan and following into Brazil, Argentina, Bolivia, Mexico, Finland, Russia, and France.

[32] In May 2016, Boyfriend released their eleventh Korean digital single, "To My Bestfriend" to celebrate their fifth anniversary since their debut as a group.

Jeongmin helped composed the track, and its lyrics were written by him, Donghyun, Kwangmin, and Minwoo.

[38] To commemorate their 10th anniversary, Boyfriend decided to reunite and released the digital single "Ending Credit" on May 26, 2021.