How to find and how to have a threesome?

Threesome can be fantastic. However, if you do not know how to find and how to have a threesome properly, it could leave you a very bad first impression and even damage your relationship with your partner if you are a couple.
If you are to find a threesome partner, you should go to some threesome sites or apps. There are people who are looking for the same thing as you. It won't cause any embarrassment. Threesome is still deemed as taboo in many people's eyes. As for how to have a threesome, I think communication is the only way.