Hi again...it's too hard for me to put together those small bits without seeing the big picture.
Just by what you've told me it looks like person 1 and 2 have intense connections. That Saturn challenge and opposing Venus may indicate that something kept them apart in a past life, in order to learn a life lesson or something.
In this life, I would think it would be difficult for them to have a solid long-term stable relationship with their Saturns squaring like that....? (unless they're family members now)