Does she think she's a rebound?

My girlfriend broke up with me over 4 weeks ago...I meet this one girl at a house party two weeks ago, told her what my deal was heard that she had no deal that she was single. she put her number in my phone. couple days later we went out to dinner and a movie it was a hangout not a date lol. we've been text the past week. She thinks we should hangout just as friends because she thinks I'm vulnerable...what does that mean?...does she think she's a rebound?...should I tell her that she's not and that I like her...
Does she think she's a rebound?
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