Well if you're still interested even though you posted this a while ago, I hope you will read my fic Tik Tok: https://www.asianfanfics.com/story/view/82061/tik-tok-2pm-jaypark-junsu-taecyeon--ambw-minjun

Or I have a selection of 2PM recommendation fics here: nynyonlinex.wordpress.com/2012/12/12/2pm-jay-park-fanfiction-recommendations/

Enduring Endless Pain (On Here)
Conversations Between Us (On Soompi)
What I did For Love (Found on many fanfic website, its the one by Val, with sechkies being the main characters.)

And yupps, my top 3 of all times. :3

Take a look at my to-read or 'read' list on my blog if you don't mind reading on LJ :) I've got loads of good fics listed there :)