You reminded each other of something, remembered each other something - yes, I know that's not how we say it in English but I know you know what I mean. When someone knocks on a door you forgot you even had. Opening it takes what little breath you have completely away. You gasp and find more and are so surprised that more exists.
You give each other looks, good ones. Looks that say, "Follow me." And you do, for a time.
When you get back home, your farewells are sweet, thoughtful, sincere. Everything for a time. You will remember this time.