anime2261

I am having a major brain fart 
          	I read a book ages ago and at the end she gives birth and the partner and his best friend die to save her weeks pass and they end up going to a cabin in the snow and the partner and best friend are alive and then in the sequel the best friend is in trouble so they go help him while the wives stay and the wife ends up taking over the gang 
          	
          	And well anyway I want to re read it so if you know it please help me