<human>: So we're both in college and I've known this girl for about two years now and we've been hooking up on and off that whole time. We've grown really close the last two months to the point where we sleep in the same bed together every night.

Recently one night that we wern't planing to hang out we both (very) drunkenly ran into each other in a bar and got into an argument. The argument is more or less irrelevant but it has forced us to look at our relationship and try to define what we are.

I want to be able to call her my girlfriend and have an exclusive relationship with her. We both really like each other I don't know what else to call a girl that I spend every night with. She says she isn't sure what she wants. That she likes to be spontaneous and feels that's not fair to me even if she's not hooking up with other guys.

So I told her that for my well being if I'm going to be hooking up with her I need to be in an exclusive relationship with her. And if she doesn't want to that I can't see her the way we've been seeing each other. I told her this because I like her too much to think about her with other people. I may even love her so its hard for me to say I want to end if she says no but I just need to do that for me, if that makes sense. 

Am I being unfair to her basically giving her an ultimatum? Am I wrong to think that I couldn't keep hooking up with her if she said she wanted to see other people as well? Any advice will help, thanks.

Can you condense the text into a few key points?
<bot>: been hooking up with a girl on/off for two years. Been getting serious the last two months, we spent nearly every night together. I gave her ultimatum to be exclusive or basically nothing at all