Hey ya tim, im sorry to hear things are not going good.
I think life can be difficult, and especally for us, but I also think you are trying to take on to much at once, focus on what you wanna study and persue that. Hell in collage if I did not have my studies and all the miles of wilderness in all directions to escape into id go crazy their. The social/date scene is second IMO to study and finding your own place. Find what you wanna do and if it really is geology then persue it, collage can be hard, dont give up man, you can have a good life and once you are graduated then focus on finding a relationship and settling down, that should be farthest from your mind at this point, you have enough to worry about just graduating, like i said, collage is tough, i have been where you are.
Also, I have been outa collage, and tho I have a relationship (my first ever) its falling apart, i did the wrong things (i think?!) and I guess eather I settled or assumed she would change for me or whatever, I too am having feelings that life may not end out what I thought it would, tho I do alright, the prospect of dying alone and childless scares the s**t outa me, not sure what to do, but just realize, we have lots of time left on Earth, we can do it and hopefully when we look back on our lives as old men we will be happy about it, thats what really counts in the end.
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DX'ed with HFA as a child. However this was in 1987 and I am certain had I been DX'ed a few years later I would have been DX'ed with AS instead.