My wife had an affair over 20 years ago. Which she told me over 20 years ago after I confronted her. She also shared with me their love making because I needed to know. BIG MISTAKE! Can't shake the visual of the affair after all these years. Her lover was a black man. Which lasted for about 6 monthes while she was in college.
My biggest issues are the acts. I see her receiving her lovers seed and enjoying it. I never have told her this. Thats one challenge.

My other challenge is we both like riding our Harleys. Problem is she has more time to ride then I do.
One of my concerns now is she is very friendly to one of our biker friends. They go riding together, out to eat, even one day they rode each others bikes. When we do ride together they are flirting. She says nothing is happening, just having fun.
HELP ME WITH SOME ANSWERS TO THESE QUESTIONS.
What can I do about the visuals? Can she be trusted? I feel are sex and marrige is pretty healthy most of the time..

Welcome to marriage builders. I am a fellow Harley rider. Gosh, riding each others bikes. That is kind of a red flag for me.

I think you might talk to your wife about how you feel. Let her know that this is bringing up uncomfortable feelings for you. See what her response is.