Girls do you start flirting with guys if your relationship starts slowly going south?

I have this co-worker who’s in a relationship. Her and I filter occasionally text about an activity we both enjoy (short nothing much). Lately she been texting more joking with each other. I like her but I’m not a home wrecker and won’t pursue unless she’s single. What’s your thoughts?
Girls do you start flirting with guys if your relationship starts slowly going south?
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