My wife of 14 years said she is no longer sexually attracted to me, but she still loves me. She doesn’t want a divorce and is giving me permission to find a sex partner. She wants to go to counseling but I don’t think it will work. We have 3 grown kids and I don’t want to leave or find a sex partner.
LemonVibe 
Go to counseling, because if you don’t, you may be living the single life.
It’s a trap
If you don’t want a sex partner and want to stay with your wife, and she also wants to stay with you then from her side of things, she is getting what she wants.
What do you want more that you aren’t getting?
It sounds like the only thing is sex from your wife. If that is the case then try counselling. If in 3 months you are in the same position, then rethink your position.
Its clear you both love each other, so why waste a loving relationship