wht shld i do?

hai im joy.im a doc.i loved karthick my batch mate .i cant say i lve him i want 2 marry him.in our marriage wht we taught might be a problem is caste and our parents.but i wont worry much abt tht.karthi told u first study get a PG degree.finish it later on we will speak with our parents.
so i told yes we were happy,iboth of us used to fight but i cant stay quite.ill speak with him may be within an hour.coz he was my prince i found in this life.he is my past,present and future.thng were going good if this feb 23 will come we will complete 3 yrs.my wonderful time.
buttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt he left me without even saying to me.he met in an car ccident on jan 26 2012.i dont know wht to do .i dont want to cry he doesnt like tht.
i want to marry hm and his family.wht they will do .wht aunty,uncle ,his younger sis will do .my frds told stop thinking abt him i shld carry on my life.
ok i understand tht but its hard verrrrrrrrrrrrrrry hard to forget him.i went and saw their parents as kathis frd not as dughter in law.i felt it was comforting for both of us. wht shd i do now friends???????????????????????????????????????????????????????
dont give hard reply pls