Non-theists can still “propositionally assume" God exists.1 This is relevant because such an assuming of God's existence is sufficient for relationship.
Non-theists can be in relationship with “the Good”, responding to conscience, etc.1 (They can even have a fairly explicit and reciprocal relationship).2 This is relevant because, unbeknownst to them, “the Good” is God.3
>Mt 25:37-40 -- Then the righteous will answer Him, ‘Lord, when did we see You hungry, and feed You, or thirsty, and give You something to drink? 38 And when did we see You a stranger, and invite You in, or naked, and clothe You? 39 When did we see You sick, or in prison, and come to You?’ 40 The King will answer and say to them, ‘Truly I say to you, to the extent that you did it to one of these brothers of Mine, even the least of them, you did it to Me.’
Non-theists can still “accept” God's existence (in the Alstonian way).1 This is relevant because accepting God is sufficient for relationship.2
Non-theists can still hope God exists.1 This is relevant because such a hoping for God's existence is plausibly sufficient for relationship.
Non-theists can still pragmatically assume God exists.1 This is relevant because such an assuming of God's existence is plausibly sufficient for relationship.