2PM Nichkhun congratulates girlfriend Tiffany on M!Countdown

Aside from the TaeTiSeo themselves, 2PM Nichkhun is also happy for the girls' first 'Holler' win on M!Countdown today.

While their relationship is already publicly acknowledged, 2PM Nichkhun cheers for Tiffany on stage. Before idols leave the stage to give way for TaeTiSeo's encore, Nichkhun slightly and quickly gives Tiffany two thumbs up congratulating the trio for their win.

Though their simple interaction is barely caught on broadcast, News media (Dispatch) is quick to capture the moment making fans giddy.

Meanwhile, TaeTiSeo win over Teen Top today and take home their first'Holler' win. Congratulations girls! Watch their performance below: