Conjugality

He moved a step to her side and bent down to kiss her forehead. The automatic conjugality of the daily kiss might have a good effect. That was what he though, if he thought at all.

Source: wiktionary

The conjugality of the court and jail is confessed by putting the two under the same roof, or by joining them together.

Source: wiktionary

And if it be true both in divinity and law, that consent alone, though copulation never follow, makes a marriage; how can they dissolve it for the want of that which made it not, and not dissolve it for that not continuing which made it and should preserve it in love and reason, and difference it from a brute conjugality?

Source: wiktionary

She and Mr. van der Luyden were so exactly alike that Archer often wondered how, after forty years of the closest conjugality, two such merged identities ever separated themselves enough for anything as controversial as a talking-over.

Source: wiktionary