Is it ok to have sex with guys your not in a relationship with?

I’m 20 I just got out a 3 year relationship

1 year- friends with benefits

2 year- actual relationship

I only been with him so now I’m curious what’s out there? I want to have fun now if that makes any sense.

Of course I’ll be safe CONDOMS CONDOMS CONDOMS!

And make sure they get tested before we do anything? Also take birth control

I know all these caution measures won’t completely prevent anything but it’s a worth a shot.