<human>: We kept detailed records of our shared expenses so that we could make sure things eventually even out. 

I paid for our groceries for a year while she was in school. Now that she's started her career she's been paying the groceries. Then we broke up. She still owes me about $2k. 

I texted her to try and sort out a payment plan and she says this back: "So I've been thinking about this... When you were paying for stuff you said you didn't mind because when you were in a bind I'd help you out and that I could just pay for more once I started working. We never really had an agreement where if we were to break up I would owe you the balance. ."

Give me the gist of the text in a nutshell
<bot>: Ex says she doesn't owe me now that we are broken up. Is there any strategy here? I'm not going to sue her.