Kırdığın Kalbin Sahibine İyi Bak, Yolun Bir Gün Muhakkak Ona Çıkıcaktır

My try ;

Look at the person carefully, whose heart you did break. Since you will certainly face him/her one day.

OR 

 Look at the person carefully, whose heart you did break. Since you will definetely cross his path one day.