Bulleya is a beautiful song. The part where the girl sings is what you are referring. The accurate lyrics actually are- 

Kyun (why) aaj(today) main(me) mohabbat(love), phir(again) ek baar(once) karna chahoon (want to) - Why am I willing to fall in love again? 

Ye (this) dil (heart) toh dhoondta hai (is looking) inkaar (reject) ke bahaane (excuses), lekin (but) yeh (this) jism (body) koi (any) paabandiyan (restrictions) na maane (doesn't listen) - While my heart is looking for excuses, my body isn't willing to follow to any restrictions.

Enjoy the song! :) 

 kyun aaj main mohabbat phir ek baar karna chaahoon --> Why do I feel like falling in love once again?

- lekin ye jis mein koi paabandiyaan na maane --> but this heart doesn't agree to any prohibitions

Thanks for your explanation prasad.

"kyun aaj main mohammed phir ek baar karna chaahoon"

I found this, when i hear mp3 music this song"bulleya",

and i had hear "mohammed" not "mohabbat"

but its sound clear "mohabbat" when i see in this movie, not in mp3.

Maybe, i must heared again with full volume :D

Okey thanks again prasad

glad you help me.