Zero wish to kiss my wife. No attraction. Walk away? Stay around?

I haven't kissed my wife in the lips in about 15 years and it's feels alien to me. Now we're sleeping apart, feels right. I am lonely and sex starved.

With my wife I guess there's no attraction and lot of animosity should I just escape the marriage?
Zero wish to kiss my wife. No attraction. Walk away? Stay around?
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