Help with stepmom

My stepmom is a nice petite blonde European milf about 50 yrs old, she’s always liking my stories and my post, idk if she’s being supportive but she gives me cougar vibes and I just don’t know how to find out, I was thinking about making a fake page to text her, her and my dad aren’t together anymore and it’s been like 6 months, the things I do with her but idk if she wants it fr, any tips on how to get in this milf?