My fiancé only likes when I’m on top

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Sorry if this is vulgar , I’m kind of getting really tired of always being on top. Our sex life is not as exciting as it used to be. My fiancé will try any position where I’m not on top and it just doesn’t work for him.

Not sure but he never can finish it’s only when it’s me, I feel like it’s messed up bc like i deserve for him to put in work too. I just don’t enjoy it anymore .

What do I do?