Niye küsersin sen aşka çok zor kalbin attıkca..

 Why are you offended (by) Love ? It is too hard ( to be offended (by)love )while your heart beats for it..

alternatively : Why are you offended (by) Love ? It is too hard ( to be offended (by)love )as long as your heart beats for it..

thanks you tunci, but you meant to say " while your heart" ??

 oh yea...I meant to say " your heart" sorry..i missed it..)

verb+dik,dık,duk,dük (d turns into t in most cases ) + ce (c turns into ç )

at + tık + ca = attıkça

In this case , we can translate it as " as long as "

Another example =  Yaşadıkça seni dualarımda hatırlayacağım

                          I will remember you in my prayers as long as I live.(I am alive)

                          Yaşa +dık + ca = Yaşadıkça