<human>: Can you condense the text into three sentences or less?

So I have been with my girlfriend for 2 years now (as of Jul 4). We have lived together for roughly 1.5 years of that time. My issue is this: when I think about my future (about my goals, about how I will achieve those goals, about becoming successful, etc...) I do not think about her having any benefit in helping me obtain those goals. I feel more as if she is weighing me down. I do not enjoy spending time with her. All we ever do is sit around and watch TV or something of that nature. And if we ever go out (to eat or something since she isn't old enough to go to a bar) then I don't enjoy any moment of it. There is very little conversation and certainly no laughter or enjoyment. She never seems interested in anything that I want to talk about, be it my work, recent discoveries in technologies, etc. And if we ever go on trips (such as weekend vacations) she never expresses that she is having a good time. 

Here is the biggest problem: her father passed away about 3 years ago from cancer, and she has been really affected by it. I am seriously unsure what would happen if we ended our relationship. Plus, I don't know how I would handle one of us moving out since we are both on an apartment lease.
<bot>: My girlfriend may be mentally unstable, and I am not sure how she would handle a breakup. What would you do?