Subconsciously, any reason could crop for dislike or like . No one will cite negative reasons like jealousy.(Side Note: I'll give men credit that they admit they like people/celebrities out of pure carnal lust. However, a lot of women have a hard time admitting to themselves that the like someone for pure carnal reasons nothing else.)
The point is we cannot assume jealousy to be a reason. Even subconsciously it usually is more of irritability and other reasons.
The primary reason when someone is jealous is when they aspire to have attributes like them and fall short. Now many men do like female attention and may feel jealous over it. However, typically men don't aspire to be cheesy or sugary romantic. Men may aspire for things like good body, material wealth, position of power etc. So if they genuinely feel a man lacks desirable qualities they are not jealous but more irritated or even feel completely nonchalant. Similarly with women, we want to look and feel beautiful. We may feel jealous over a woman more beautiful. However, women also aspire to be of good character, have personality, be likeable, be natural etc. So if we genuinely feel a woman lacks these desirable qualities we are not as jealous as we are irritated.
Another funny thing is that there is a fine line between jealousy and admiration. Men and women will actually start admiring people who have all qualities they aspire.
You probably have noticed I'm trying to intentionally steer away from the light heartedness and focus on the heavier stuff. So keep that in mind when you read my responses in this thread. I'm being intentionally oblivious to the light side. 😉