<human>: Can you succinctly summarize the text in 1-3 sentences?

Me and my girlfriend met on the first day of uni, hooked up, started going out a week later. We've been largely happy for the past 3 months, but we're prone to petty arguments and irritate each other sometimes.

I got drunk with her a few nights ago and she was like a different person. She was being very obnoxious to my friends, drinking their alcohol without asking and prattling about how I was the best guy in the world and a better boyfriend than they were to their SOs. I know she mean't well, but it was irritating. She then began tweeting about how she was smarter than everyone else while drunk, i've never seen anything like this in her! I talked to her about it the next day and I knew she was genuinely sorry, and it wouldn't happen again.

She is very loyal to me, does anything for me, and I worry that she loves me much more than I love her. She wants to spend every day with me, and I can't help but feel suffocated. She told me she wanted to marry me some day only 2 weeks after we started going out. Is this normal? I told her that I want to spend more time with my friends, and she agreed but her tone suggested she was just dismissing it, and I don't think she genuinely respects how I feel about it.

Part of me wants to break up with her because I want to enjoy my first year of university with more freedom, but i'm utterly dreading breaking up with her, I know she will be an emotional wreck and I don't want to be responsible for making someone so miserable.

There are many great things about our relationship. We have great, frequent sex, we share many common interests, we do (for the most part) enjoy each other's company, but these thoughts i've been having are weighing heavily on me and I could really use some advice on what to do.
<bot>: Conflicted feelings about our relationship. She's more committed, but suffocating and has some ugly personality traits, I want more freedom