In short, during the lockdown of 2020 I messaged another woman through a Facebook chat group we were part of. We started talking about a shared interest in sport (which formed the group) and then just started chatting about life.
She was divorced and had been through a lot. The messaging went on for a few months almost daily. The tone was mostly normal and friendly with a few "teasy" messages (e.g. she thought she was bi and we'd talk about celeb women we'd fancy), but nothing outrageous.
At the time I told my wife I was messaging her because I felt like I shouldn't be doing this, but she said it was fine and had no problems. She trusted me.
After a few months the messages fizzled & I haven't spoken to the woman in over 3 years. Never met her either, she lives in another country. Have zero desire to ever talk to her again. But my OCD makes me think I was cheating because I enjoyed the chats and I'll hold my hands up, I found her attractive from her pics.
Again, my wife knew all about this and said she doesn't think I cheated. She even has a male friend she texts frequently where they talk about life and everything (including his sexual conquests). I'm fine with this and trust her.
I've been married 8 years and have never cheated on my wife who I adore. Am I overreacting here? This is me going through a 'guilt spike' as I call them.