Same standard for gay and straight?

Im not the best at expressing my thoughts so bare with me…

Does society as well as you specifically have same standards for gay and straight relationships. For eg. heres a scenario = will it be just as acceptable for a older guy to lust for a young boy(18) as it would it be for him to lust for an young girl(18). I guess both will be frowned upon but which one will be more scandalous.

I ask this bcoz as a 21 year old,i recently had my first kiss and subsequent kinda awkward but sorta beautiful U KNOW WHAT with a guy(19 ,junior in uni). It worries me that this might not be a phase and i meight always be attracted to both genders. But i already see myself getting older and the thought of being with a younger guy makes me feel ashamed,as if im taking adavantage somehow, as even right now some of my juniors flirt with/tease me i fell like a creep and the age gap is only 1-2 years. While i wont feel the same for say a young girl. it meigth be becoz where i live and culture around me isnt very accepting of such things.

How do i deal with these emotions, what should i do?

Also how to flirt with guys? Any tips😅