Arcana Coelestia # 3137
3137. 'At the spring' means the enlightenment of them from Divine truth. This is clear from the meaning of 'a spring' as truth, dealt with in 2702, 3096, here Divine truth, as above in 3131. Because the Word is Divine truth it is therefore called 'a spring'. That 'standing at the spring' here embodies in the internal sense the enlightenment of things in the natural man follows from the train of thought; for where Divine truth is, enlightenment is there.
Heaven and Hell # 369
369. Both man and woman are endowed with intellect and volition, but for men intellect tends to take the lead, while for women it is volition that does so; and people are characterized by what is in control. There is no controlling, though, in marriages in the heavens. The volition of the wife actually belongs to the husband and the intellect of the husband belongs to the wife. This is because each wants to intend and think like the other, mutually, that is, and reciprocally. This is how the two are united into one.
This is a truly effective union. The intent of the wife actually enters into the thinking of the husband, and the thinking of the husband enters into the intent of the wife, especially when they look each other in the face, since as already noted there is a sharing of thoughts and affections in the heavens. There is all the more sharing between a wife and a husband because they love each other.
We may gather from this what the union of minds is like that makes a marriage and that gives birth to marriage love in the heavens - it is that each wants his or her blessings to belong to the other, and that this is mutual.