<human>: Could you distill the essence of the text into 1-3 sentences?

I have been dating this girl for roughly 3 years and lately we've kind of spiraled downward in our relationship. Plain and simple we've started arguing a lot about little things and essentially playing tit for tat with each other.... All this came to a fault this past weekend, I said I don't think this is working out and she suggested she leave. So she did, it's been a stressful event, were still taking but she wants to take a break for a few days and said she wants to stay monogamous, that she's not moving on, just needs a break.

I'm kinda feeling a bit insecure about the whole thing. I find it hard to trust the situation for what's been stated. Looking for some input on this, has anyone ever had something like this work out? I think let's take a break as relationship over but the way it came about wasn't in standard break up form...  so what should I do?
<bot>: Relationship been rocky, SO left and says she just wants a break but to stay monogamous. What should I do? Trust the situation or no?