dirty secret

i've always wanted to try a bdsm scene but i'm scared my partner will freak out if i tell them. last night i had this really intense dream where some stranger in leather gloves and a mask tied me up, spanked me hard till i was screaming for more, then fucked me against the wall while i came again and again. woke up drenched and panting. couldn't stop thinking about it all day. should i tell my partner? im so confused