When your man talks about the future with you, it shows that he is interested in spending the rest of his life with you.
And since he has that at the back of his mind, it makes him interested in your tomorrow than the now.
He uses the events of the presents to know how to shape the future. He discuses about stuff like how many kids you love to have, what kind of business you love to venture into etc. If you’ve got such man hold him tight.