babies and weddings both tend to eventuate in pruning the friendship tree - they bring a whole range of new problems and emotions into the relationship (insecurity, jealousy, envy, resentment, guilt) which neither party may have ever thought would become an issue. all you can do is try to salvage a good relationship by having a good heart to heart oralternatively cutting the strings loose and trying to move on with as little resentment as possible.