<human>: Can you provide a brief overview of the text?

M[26], I've been with my current GF F[26] for 2 years. We had a happy long distance relationship most of the time, and had plans for a future together (talking about marriage and things).

About half year ago I quitted my job to start a new business where she lives. The pressure from my business is killing me, and giving me little time to spend with her and a very very bad temper...GF starts complaining about me being a whole different person, and I start to hate her for not showing any supports. We talked and talked, I told her I am in tough times and really need her support, but nothing's changed after all the talks.

Fast forward to now, we finally decided we should no longer go out with having marriage in mind (she insist she still want marriage and will find someone to marry if I can do it this/next year), and if either of us find someone better we should tell the other one and break up. 

I'm feeling very depressed about this because I still love her, and just watching our relationship slowly dying hurts me everyday. 

Do I make a commitment to improve things or do I break off now?
<bot>: Relationship (let's get married!) turned to Relationship (Let's breakup if we can find someone better), and slowly dying, commit more or break up?