I almost had STD from a threesome

I almost had STD from a tinder threesome. My friend and his girlfriend invited me to have threesomes with them. I agreed. But when that day came, my period also came. They were so ready for a threesome, so they went on a tinder for threesome dating app and found another girl for alternative. They had a threesome together. A week later, they all tested positive of herpes. It turned out to be his girlfriend who cheated on him with another man a week before they had a threesome. How sad!