<human>: Can you condense the text into a few key points?

So I've got this girlfriend who loves me like crazy but she herself is a bit crazy. We've been together for 4 years and she's cheated on me once but we got passed it. I'm basically cut off from all my high school friends now that I'm attending college with her because she doesn't like them. But again she loves me to pieces. Also she's emotionally unstable so if I were to leave her she would be ruined.  She doesn't have the family situation she need right now so it feels like I double as her boyfriend and dad, which is weird.  I love her so it's ok but then there's this other girl that I can tell cares about me a TON but doesn't like me with my gf. I care about her too but I've hurt her before because we hooked up a while ago but I cut it off for my gf. She's like the sweetest girl on earth. Then there's this third girl who I've had a crush on since like seventh grade but she's been untouchable to me.  I've pursued it many times but always fallen short. I'm only 22, what should I do?
<bot>: 3 options: crazy gf who loves me, sweet girl who likes me a lot but I am unsure of, or untouchable girl I like?