Flirting with a married girl

I have recently met a really cute girl who has been extremely friendly with me. We will usually meet up for a couple hours at night a few times a week after work at the local park. She gazes deep into my eyes and smiles at me a lot, we talk non-stop and laugh and flirt constantly. The only thing is that she is married, she has mentioned her husband before but continues flirting with me. How can I escalate things and get her to sleep with me? I can tell that she wants to by how well we get along, and we are both extremely attractive. This would just be for fun, but I'm not sure how to approach it with her. Any ideas?
Flirting with a married girl
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