What does it mean when a girl says she needs a time out?

lovebird01
My girlfriend and I once had an argument, and she got offended by some things I said. She told me she wanted to take a time-out in our relationship.

We have since worked through it, and never did have that time out. However, I've always wondered exactly what she meant at the time? Was it a sign that she wanted to break-up with me? I've never heard of any guy saying that to a girl - "We need a time-out". Help me ladies? I don't want to hear that again, ever!
What does it mean when a girl says she needs a time out?
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