I would break up with my significant other if I had money.
Why do you want to only break up with your SO when you have money?
I'm not well off right now and need them to support me financially.
You shouldn't stay in a relationship you don't want to be in. It will only cause harm to yourself and your partner and potentially create resentment between the two of you.
I'm going to break it up with him now. I don't love him enough for him to be a part of my life.
That is unfortunate, but ultimately the right decision. I hope the breakup goes smoothly and you are able to get back on your feet. Ask your family or friends for support while you make the transition.