Boring Couple Syndrome (BCS), also know as Isolationship Syndrome is a terrible condition that can affect couples of of all kinds, with prevalence and severity increasing proportional to the longevity of their relationship.
The condition is caused by the members of the couple no longer feeling the need to go out and socialise or do anything fun, as they are content to just spend time with each other. In time this can manifest itself as BCS. Common symptons include neglecting friends, social activities and anything remotely fun or exciting, coupled with increasingly reclusive behaviour which in turn can lead to a gradual loss of personality and glazed over eyes as they die slowly inside
Single Person: Hey you guys coming to the karaoke night tonight?
Couple: Well hmmm we totally would but, we're just like so tired n stuff and urm it's probably best if we like save our money and stuff as we have soooo many things to do tomorrow, maybe some other time though (or any other generic BS excuse)
Single Person: Man your Boring Couple Syndrome is getting worse guys! :(