Hmm,sounds like ur gf n u have a big prob here...
Firstly u said dat the both of u had been together for 1yr+,iwant u
to ask urself dis qn: during dis 1yr+,were the both of u realli
happy together?were the both of u alwaz doing the same thing every
wk?
If u ans is yes..then i guess u realli need to change.
For a relationship to work out,u need to add
some spice to it!esp for a long term relationship like urs.If the
ger dun love u,she wouldnt have been with u for so long lor.have u
ever wonder how cum she can be with u for so long?Firstly is most
probably she loves u a lot although the relationship is a bit "no
taste". Secondly,may b bcoz she's waiting for a miracle to
happen..she hope dat this relationship will bcum more
interesting.Dun tell me dat u dun... 
U said the both of u had broken up n i think u r quite unwilling to
let go n u still want back the relationship rite? If dats the
case,boy,let me tell u,u realli have a lot to do.Dun care abt the
other guy who wants to sian her,now all u can do is to gan dong
her..as to hoe to go abt doing it..u'll have to think abt it
urself.Stop probing over the guy n her.concentrate on how to win
her back.
But if u dun want to continue the relationship,then dun be a
meany..dun question so much abt her life..think abt it. 
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As LoNg As I SHaLL LiVe
I'LL HoLd U dEaR
AnD I wILL rEMiNiScE
Of OuR LoVe ALL ThRoUgH
ThE YeArS....