One of the best things we can do for our relationships -- parental, sibling, marital, friendship -- is to feed them.  What, exactly does 'food' for a relationship look like?  A couple of suggestions.   Laugh together. A new study out showed that the relationships that endure are those wherein those involved laugh together.  Not just at funny shows, or books, but through genuine interest and joy found together.   Do things you are both/all interested in.  Yes, this means you