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What is difference between the meanings of sex life and sexual life?
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The usual phrase is sex life.

Can you give us some contexts where you have heard 'sexual life'?
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Students: Are you brave enough to let our tutors analyse your pronunciation?
Jackson6612What is difference between the meanings of sex life and sexual life?
Her sex life has been close to nothing since her divorce. - sex (acting as an adjective) modifies life.

Sexual -anything of sex, or relating to sex in nature. i.e. I was shocked when I realized how much sexual exposure children were subjexct to in that movie.
Thanks, GoodMan.