As a woman who has nearly exclusively men as friends I can tell you now I find it very simple to consider someone good looking but have zero attraction to them myself.

My best friend is a sweet kind gentle soul, who is a good looking guy but there just isn't any click. It's not as simple as saying he isn't my type exactly. As I don't have a type.

But there just isn't any chemistry, attraction, spark.
He doesn't make my stomach flutter, I just can't think of him in that way.
But that in no way reflects on him. It simply means we aren't compatible in that way.

I am sorry your obsessing and I am afraid, other than keeping busy and throwing myself into new projects I don't know of any other way of distracting you from these kind of thoughts.
Hopefully time will help them pass.
All the best and take care.