1. Choose a safe dating site
There are many threesome dating sites, but not all of them are safe enough. Reviews of these sites often show a lot. As far as I know, it is a great way to to have a better understanding on the site. So, read users' review before joining a threesome dating site.
2. Date safe partners
Not everyone is seriously looking for dating partners online, scammers and other criminals cannot be avoid online. Before dating someone, make sure it is safe to date with. You can ask about its dating history, view the profile to know more about your partner.