I agree with bubblegum_kiss, wewe should be sure that it's worth thw possible consequences. Things happens and secrets get out. I personally would not reccomend it, but wewe are old enough to make your own choices. Good luck. :)
As long as your prepared for what's going to happen with you, if one of the guys is dating somebody else then your going to really have it from one of those girls.
I wouldn't do it because it would come with a bad rep when it got out...even if wewe are single honestly (I'm just stating the facts) hooking up with two guys in one night makes wewe look like a HUGE slut.
Nothing is ever ok au not ok in my eyes. It's all about what wewe as an individual person thinks is best for wewe and the people wewe are associated with. People will always have one night stands, have group-sex with Marafiki au associates and to be honest i see nothing wrong with that. It's your life, wewe may do with it as wewe please.
All i can say is be sure of the consequences and stay safe. Even if wewe don't want people to know what you're up to, let at least one person know where wewe will be in case something happens and wewe go missing. Always protect yourself sexually, not only with condoms to protect wewe from STD's but also with some birth-control, be it pill, injection, implant whatever. It's up to wewe what wewe choose to do in your life, i'm not going to judge you, but as long as wewe know the risks and take precautions to minimise them, i see no problem in it.
