Most Helpful Guy
You do know that there are a variety of STDs you can get, even when a condom is used, right?
And that, if you are going to be promiscuous, there are better birth control methods (like an IUD) you can use, if you are unwilling to take the pill?
All moral judgement aside, sleeping around will always have risks to your health, and while you can reduce those risks, you really can't eliminate them.
Most Helpful Girl
Always always always have him wear a condom and watch him put it on because the lie sometimes. Even though it’s uncomfortable ask them if they have gotten tested for STDs recently and if any came back positive. Don’t suck dick, you can still get herpes from that