Step dad tried to seduce me. What should I do?

My step dad and mom have been married for twenty years,

He's been my father since I was eight

Then now I'm 26 and he started acting weird, he's been trying to sleep with me I'm not sure how to feel about this because the person I love and trust is trying to hurt me What qm I supposed to do, because I know this will eventually destroy our family and they've been married for twenty years for Christ sake

Step dad tried to seduce me. What should I do?
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