Can a married woman love her husband and still cheat?

I (31m) joke around with a coworker (30f). Usually keep it friendly, PG nothing to flirtatious. And occasionally text, a few times throughout the day. Sometimes I get the feeling she likes me, seems to get jealous when I talk to other females. But she says she loves her husband and talks good about him. Is it possible for this type of women to cheat?
Can a married woman love her husband and still cheat?
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