I'm still in shock

So my older sister is getting married soon and so the grooms family decided to come see the family,for introduction and to see the home,when they get here I see someone that looks familiar and I freeze,the brother of the groom is someone I had hooked up with a few times,you think that's bad?we are both guys,talk about it being awkward,and uncomfortable.

UPDATE:So I finnaly gained my composure and acted normal we went into the house had a good time but then it starts raining,heavily which has never happened b4 and the roads here ni mbaya sana the car might get stuck,so now they have to sleep over,there is a guest room but only one so that's for the parents the groom will sleep in my brothers room. And I will share mine with guess who?Manze hii siku iishe.For context I ended things with the guy because he cought feelings,I ghosted then blocked him only for us to meet up again like this?To answer your questions;yes you can call me mr,no i haven't come out yet,and no I'm not sleeping with him tonight or any night for that matter.