Loosing virginity in a threesome

Is it a good idea to loose my virginity in a threesome? They are a couple, both verse i think in their late twenties. im 19 a bottom. They seem pretty chill, but i only exchanged few messages with them. Their dicks seem to be maybe 15-17cm. What do u think? It was always a big fantasy of mine, and if for some reason i tap out during sex, they can still keep going. On the other hand idk if it is a good idea for the first time. What do u think?