It it always going to be "us and them"..

Reading the forums,, personal experiences,, even as recently as last night when lines were jokingly drawn in the sand about a stupid vacation "we'll go and they can stay".. Or when your spouse accidentally calls you by their ex's name and SS19 watches to see my reaction.. Is there always going to be underlying tension.. Is it always,, blood is thicker than water? I saw the term disposable used in another thread and as much as I hate to admit,, that word could explain alot.. Is disposable how you feel?