Im depressed and confused.....?

Me and my girlfriend broke up 2 weeks ago. I still have extreme feelings for her(and if u r wondering she broke up with me, )because she found out i was still smokin weed even though she told me not too. i know, thats my fault. i should have listened to her but instead ****** it up just to smoke. I havent been able to get over her and im extremely depressed. She is probably completely over me now cuz she has another boyfriend now and hasnt talked to me in a while. If u dont have anything helpful to say or have something rude to say then please dont post. Im already depressed as it is and ive been sitting in my room not talkin to anyone. i cant talk to anyone cuz i am dissappointed with my life. I have been hospitalized two years ago because of depression. I remember how bad i was back then and im basically worse now becase i dont like anything in my life now, i loved my ex but cant have her back and dont know what to do with myself.