"too jealous" is a bad thing - what about not being jealous at all?

[dickriculous]

that kind of response from a male usually has more to do with his own ego being bruised than about passion.

Couldn't have said it better myself

He is a trained UFC fighter

Name? Any fights coming up? I'm a huge fan, and I practice bjj pretty frequently. If he's a UFC fighter I've probably seen him in action multiple times, in fact I may have even trained with him. How crazy would that be?

[vashti]

This is what I could find briefly on it

http://www.medicalnewstoday.com/articles/120395.php

Even if I thought you were drawing the correct conclusion based on this study (and meaning no disrespect, but I don't), the simplest answer is usually the correct one.

This guy either doesn't care enough to be bothered, doesn't know if/how to react, or simply isn't the jealous-type.