Taecyeon is closest to girl groups among the 2PM members.

On the "Guerilla Date" of KBS 2TV's "Entertainment News" program, 2PM seemed to be having fun with the interview. When asked about which member was closest to girl groups, all the members quickly responded that it was Taecyeon. 

Junsu went on to explain that Taecyeon is closest to all the Girls' Generation members, almost like brother and sister. They all expressed their jealousy, when Taecyeon became embarrassed and tried to deny it.