If you do decide to say something just be clear it’s coming from a place of concern and being safe. If my friend brought this up with me the only part that’d come off as shaming is the random guys bit. I don’t personally sleep with guys I haven’t known for a while but body count doesn’t and shouldn’t matter as long as people are being safe about it. While advancements in medicine have given us ways to treat diseases it’s just better to try our best not to get them in the first place.