Sir I Love A Girls A Lot And Due To

sir i love a girls a lot and due to my attitude extreme temper i commit very wrong sins to hurt her and she always does the against of whatever i used to say her to do, and now problem is due overthinking regarding her i cant sleep of two to three nights. unable to concentrate on my work..... i have no such friends with whom i can feel happy and hangout tooo....... i feel very demoralized ... please tell me what to do i m very tensed......