<human>: Can you provide a brief overview of the text?

I've always been a bit of a jealous person in relationships, but now it has seriously taken a toll on me.  I might be losing the best person I've ever had in my life right now because I can't get over these feelings.

The other night, Saturday, my girlfriend and I went to the bar together with some friends.  I got really drunk, and near the end of the night, I saw a guy she knew with his arm around her, buying her drinks.  Her friend kind of freaked out when I noticed, so I began to question her, very harshly.  I turned into a person I've never been before, I was yelling at her, and being extremely unfair.  For the first time in my life, I was verbally abusive.  I know if I was sober, I wouldn't have reacted this way, but that is no excuse.

The morning after, she told me she's done with me and she's leaving.  I begged her to talk to me and told her I'm sorry.  She's gonna think things through for a couple of days, but I don't think she's going to want to stay with me, saying we should go back to being friends.  This isn't the first time I've been jealous like this, but this is by far the worst.  This was more than a fight, this was me being a monster.  I did not physically abuse her, but she says all of her dreams of being with me are gone, and she can't see herself having a future with me anymore which is extremely upsetting, although quite understandable.

No matter what the outcome is of this, I'm coming here because I need serious help with my jealousy.  I'm seeing a counsellor at my university on Tuesday, but I'd like to see what you guys may have to offer to me for advice.  Whether or not she breaks up with me, I'm doing something about this because it needs to be done.
<bot>: Serious jealousy problems may have wrecked my relationship with my bestfriend/girlfriend.  Need some serious advice and probably a good wakeup call.