Wat would u do if u take a decision abt ur lov in haste and anger ????

i m a 18 yrs old gal 3 years back i used to like this guy a lot in my cl but we broke up due to some misunderstanding then after a year we patched up but then he stopped attending my calls n calling me now after a year again he asked me for patch up though i forgave him n i patched up with him but i couldnt trust him and i dumped him because i wanted to make him feel what i had gone through a year bak and also bec i m in cl 12 and my studies were getting affected as i was getting distracted and a year bak when he left me he was in 12th and i feel he left me bec of his studies so i also left him because of my studies but he said he was serious this time now after dumping i asked him for patch up he refused and i m feeling v bad wat should i do to get him bak or to get over him plzzz guys help me to get him bak or to get over him