We knew a family in Michigan with 4 teenagers and 2 younger girls that all loved each other. Not just the deep- down-love but friend-love. They genuinely enjoy spending time with each other. I asked their mother what she did to help encourage that type of family culture. She simply answered, "brain washing".
What?
Yes, brain washing.
We've started and it's working great so far. Phrases like, "Isn't it fun to have a brother?" "You guys are such good friends!" and "You have so much fun playing with Joshua/Gabe, don't you?" are heard in our home many times a day.
And here is a little reward: Gabe and Josh love playing together.
(Maybe it wasn't the brain washing but just their two little spirits, but we're sill grateful.)