Is it normal my brother won't let my boyfriend stay

Yeah, normal. It's your brothers place. His home, his rules.

I suggest u stay somewhere else with your boyfriend, if moneys an issue, there's always youth hostels, backpacker etc.

OP's bf here. i just think it's a bit harsh to not even think about it considering how far i would be going. imagine we were married, could he still say no? i doubt it.

His house his rules. Respect him. Maybe convince your brother to let your boyfriend sleep on the couch!

I'd hate if my little sister brought some stranger over to my place on holiday, and possibly had sex with him at night. I just wouldn't let him...regaurdless of how "nice" he may be.
I'd need to have met him beforehand.

i totally agree with your brother. i dont even want my sisters boyfriend to come over for a bbq, let alone stay for a while and they have been together for a few years. but her situation is different to yours. you should respect your brother and the rules he has decided to set in his house. i am the youngest of 4 kids so i dont know what its like to have a younger sibling but my older brother has always been protective of me and always looked out for me. but i agree to not let you sleep in the same bed, probably because that is how i was brought up. did you ask your brother before you arranged for your boyfriend to go there with you?

okay the girl is 18. she is not a 12 yr old child.
and she has been w her bf for a yr-not 2 months or one month....but a fkn year.
okay in my opinion the brother is being dumb. but honestly there is nothing you can say or do to change his mind. because like someone said above his house his rules....sadly in this case that is.....
he needs to understand that your not LITTLE anymore that your his YOUNGER NOW GROWN sister -the way i put it or call my sister when i tell anyone i say "She is my younger big sister now" because she is no longer the little young baby girl i raised myself. anyhow
i am sorry your stuck on this sol because his house his rules. you should def get him and ur bf to meet first. because honestly i gta tell you my bro would say that same thing to me if i had a bf and asked him can my bf stay at your house w me-my bro would say absolutely NOT!
i mean unless he met him in advance and they were friends or something or have accomplished that step of becoming friends. this is what you need to do. you also need to realize that as a younger sibling of his he will ALWAYS ALWAYS see you as his BABY sister. no matter how old you two get he WILL ALWAYS see you like that.
i know because it is the same way with my older bro even tho he is ONLY a yr older than i am.

Having you stay just feels like having sis visit. Having you and your boyfriend stay just feels like sis taking advantage of his hospitality while she and her boyfriend take a vacation.

Sounds like he is overprotective of his little sister so it is normal. Maybe try to get him and the boyfriend to meet or even talk to eachother online or throught texting. This might put his mind at ease as he will atleast know abit about the guy and his personality.