secret freak?

I lost my virginity to my boyfriend and we've been together for 8 years now. So obviously we had pretty teenage vanilla sex. But I feel like it's never progressed past that and it's gotten a bit boring.
I honestly feel like I'm a bit of a secret freak and little hints of it come out during sex, but I'm worried I'll frighten him if just one day I get all kinky?!
Any suggestions?
Talk it out? But how? 
Slowly get freakier?
WAM BAM LET THE FREAK OUT

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