I live a pretty promiscuous lifestyle, i hit the gay sauna often and use the gloryhole every time.
STD's aren't really a problem except for the incurable ones like HIV.
Blowjobs/oral sex can be done without a condom, np.
Anal sex with strangers is when condoms is a must (unless you are a bug chaser, in which… ewww).
If you wanna go raw and recieve a nice creampie, get a friend or someone you know is clean and only go raw on this person while you both agree to use protection on everyone else but eachother.
So my life now is pretty much this: fuck/suck though the gloryhole (with protection) and being breed by my friend once in a while.
Some others mentioned that if you want a close relationship, then aim for that right away.
Problem with gay relationships though is that we suffer a LOT from cheaters because men are much more sexually available. So you gotta find a very stable man, no matter how boring he is, if you can love him, then that's enough.
Me personally, i don't wanna settle down, so if i find myself a new lover, i say in advance that this is temporary, so he can't expect me to just stick around all years.