Are Relationships hard?

Wife and I been married for 15 years now. We just had our 15 yr anniversary. Lately I have been feeling different about our relationship. I am thinking to say I want to separate. Please only serious answers. This is a real thing. I am asking this on gag cause I know a lot of you are married.

Updates
11 mo
All of you are saying nice things. I do appreciate it.
Updates
11 mo
Thank you for all the genuine answers
Are Relationships hard?
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