This song is sooo good. here is my attempt.
Jaane tu Ya Jaane Na Tu bole Glass adha Khali, mein bolu adha bhara --you say the glass is half empty, I say the glass is half full! Mein Bolu kithna saara, tu bole zara zara --I say there is so much, you say there is so less! Mein bolu din hai tho, tu bole raat nahi --I say its day, you say its not night! baat tho wahin hain na, bas wahi baat nahi --Its the same thing right? just its not that thing! ( someone help me with this!) baat tho hai bas yahi ke, meri baat bas Jaane tu jaane tu ya jaane na! --You know or you dont! maane tu maane tu ya maane na! (2) --You agree or you dont! Tu soche zindagi hai , yeh na badlegi kabhi -- you think that life will never change mein sochu sab badaltha hai, tu na badalegi kabhi -- I think everything changes but not you mein sochu tu hi tu, mera koi aur nahi --I think its you, and i dont have none tu soche mein hu tera, bas tera koi aur nahi --You think i am yours and you dont have anyone else koi aur ho ya na ho , tu hai mein hu bas --no matter anyone else is there or not, we both are Jaane tu jaane tu ya jaane na! --You know or you dont! maane tu maane tu ya maane na! (2) --You agree or you dont!

