Slightly relevant background: I officially moved in with my bf (who I have been dating for 3,5 years) and his family last spring but I gradually moved in long before that. His mom lives seperate, his sister prefers not to come home, so I only share the household with my bf's brother on weekends when he is home from College. 

Last fall the brother used the garage as a wood shop and to make room he moved some stuff to the other garage (which can't be locked). Two days ago I wanted to go for a ride but I couldn't find my bike. I looked everywhere (they have lots of storage space) but couldn't find it. I'm pretty sure that I left the bike in the garage that can be locked but I can't prove it and I havn't used it since July. The brother denies ever seeing it but he is not very observant so he might have missed it. He also left the garage door open a few times so that everybody driving by could have seen inside and taken the bike. On the other hand it's pretty old and not worth anything.

What do I do now? Me and the brother don't always get along for other stupid reasons. My bf will never move out (this could be another thread in itself) so I can't start a fight with the brother over this and still be comfortable around him. My bf is very non-confrontational so he isn't really useful either. My bf's family is rich, my family is middle class so both could help out in settling this. Help me please. I don't know what to do.
user
My bf's brother [22/M] might have lost my
assistant
Slightly relevant background: I officially moved in with my bf (who I have been dating for 3,5 years) and his family last spring but I gradually moved in long before that. His mom lives seperate, his sister prefers not to come home, so I only share the household with my bf's brother on weekends when he is home from College. 

Last fall the brother used the garage as a wood shop and to make room he moved some stuff to the other garage (which can't be locked). Two days ago I wanted to go for a ride but I couldn't find my bike. I looked everywhere (they have lots of storage space) but couldn't find it. I'm pretty sure that I left the bike in the garage that can be locked but I can't prove it and I havn't used it since July. The brother denies ever seeing it but he is not very observant so he might have missed it. He also left the garage door open a few times so that everybody driving by could have seen inside and taken the bike. On the other hand it's pretty old and not worth anything.

What do I do now? Me and the brother don't always get along for other stupid reasons. My bf will never move out (this could be another thread in itself) so I can't start a fight with the brother over this and still be comfortable around him. My bf is very non-confrontational so he isn't really useful either. My bf's family is rich, my family is middle class so both could help out in settling this. Help me please. I don't know what to do.
user
My boyfriend's brother lost my [22/M] bike, I'm
assistant