In legal contracts, the amount of giving is often defined in writing. Less formal relationships such as friends usually define the necessary giving in an unwritten and sometimes unspoken agreement. In these cases, expectations can cause friction, but after a while both parties understand the boundaries. The idea is that if more is given by one party, the other feels slighted, and they may complain that they are being taken advantage of. However, peace and harmony will exist if each party believes their giving is being matched by their covenant partner.