<human>: My girlfriend has always been a bit on the clingy side. We've been dating for 8 months so I assumed it would go away, but it hasn't really. Now I've been asked to go away for 4 months to work over the summer, about 4 hours away from her.

I've been away literally 2 days, and she's already crying and sad about how hard it is. Yesterday when she had things to do it was fine, but today when she didn't have much to do she was sad because I was doing things with my mother (who I don't see much) and couldn't talk to her all the time.

While I do really like my girlfriend, I'm starting to get the feeling that I am the sole source of her happiness, and that she has nothing beyond me. Yes she is in university like I am but when I think about it I'm not sure what her hobbies are. I was getting excited about playing guitar more, getting back into horse riding, skateboarding and exploring my new city over the summer, and all she could think about is how I won't be able to talk to her while I'm doing that. 

I'm beginning to worry that her lack of passion and dependence on me will hold me back. It's as if me doing something that doesn't involve her is me "choosing" for her to be sad later on. The mere fact that I'm not giving her all that attention means I make her sad later on. But if I were to bring this up, I feel as if she would feel offended and start crying. Sometimes I feel infuriated because she blames me for her sadness, when she's basically just sitting at home waiting for me to interact with her. I want to shout "DO SOMETHING! Learn an instrument, cook, go to the gym, anything." Don't make me your only source of entertainment!

I'm sorry, I've realised how much like a rant this sounds like. I just have no clue what to do, and I'm worried I'll just keep feeling more trapped as time goes on. Please help me, I don't know how to move forward.

Can you condense the text into a few key points?
<bot>: I feel like my gf puts too much pressure on my by making me her almost only source of happiness. Don't think I'll be able to deal long term. What to do?