He wants to stay with 2 random girls?

What the fuck. So his friend met this girl on holiday and she lives in nyc where as we live in England, his friend is flying over to nyc to meet this girl and wants my bf to go with him. They are staying in his friends holiday gfs friends house ( so there would be 2 girls, one for his friend and then you get the rest) im absolutely fuming and feel disrespected. He said he would sleep on the couch and that it’s just for the experience because Nyc is amazing. I get that it’s a good experience but that’s is absolutely fucking ridiculous if you ask me. I have no idea what to do and don’t want to see his face because I’m so pissed😊