How do you reassure your partner you are attracted to them if they doubt you are?

How do you reassure your partner you are attracted to them if they doubt you are?
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+1 y
They think you are not attracted to them anymore, or openly question your orientation or interest. What do you do?
Updates
+1 y
- she paints and draws naked women all time, and she's completely heterosexual
- I have one picture and only one picture of a male model and I get questioned about it
- Okay
How do you reassure your partner you are attracted to them if they doubt you are?
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