Don't trust myself anymore.

Yesterday morning was a great start to a peaceful Saturday. Went with my aunt to O-depot and got her a desk chair, then went grocery shopping. Had a nice lunch, then started to read my philosophical book. I decided to jot down a few quotes on a wooden bored, wanted to get really comfortable and so i drank some Smirnoff. Got drunk out of my mind and went up to dispensary to buy some pot, I hadn't smoked for about 3 months but since my membership was about to expire I bought an ounce for $420 (coincidentally) . Smoked only one joint when my friend had come over, and was soon puking my guts out. Today at noon I tried to get a refund but they said they only could exchange for other merchandise, so i left the broken ounce to the girl at the desk and walked away.

I quit pot because I flew over to Florida to meet a girl and really fell in love with her, but after flying back she told me she didn't have feelings for me despite the sex and Intimacy we had. I am still happy that she was in my life and do to her I quit smoking.
I am trying to find some one again, but it's tough, Has internet dating worked for anyone out here? (I live in cali and feel like there is a lot of us single guys out here)

I hardly ever drink, the bottle of Smirnoff has been sitting on the shelf for about 2-3 months almost full to the top. I never lost control of what I am doing quite like yesterday.
Would you say I have some kind of a disorder, any advice from someone that's lost it like that before?

Big thanks in advance.