Is it normal to be angry at my friend for having sex in my bed?
So, I had my friendship group over the other night for some drinks, movies and board games. Two of my friends are currently in a relationship, and neither of them are allowed to stay at each others house (they're both 17)- but were both allowed to stay at my house. They took this gathering at my house to have sex in my bed, rather than hang out with the rest of the group. They simply stayed in my bedroom ALL night, and several people walked in on them several times 'not wearing much'.. I feel quite stupid.. like they have just used me, and my house as a place to have sex as they never have a chance at each others house. Am I over-thinking this or do I have the right to be mad? I also feel kind of violated because it was MY bed and they knew that. None of my other friends got mad, which leads me to believe maybe I'm just being sensitive.. let me know!