Obi-Wan thinks he knows what his reaction would have been at the time. He had told Anakin more than once that a Jedi must not allow himself to get too attached to anyone, that forming a possessive devotion to another person goes against everything the Jedi teach, and it is something he still believes.

However, he also believes -- and always has -- that there is a deep well of difference between possessiveness and the sort of love that exists between two people. He had warned Anakin against pursuing anything with Padmé, not entirely aware of how far it had already gone, but he knows more now. He knows better. What he has to do now is not try to keep Anakin in the Order, but instead continue to teach him what it means to love without wanting to control all possible outcomes. Even if their world were the same, with the benefit of hindsight, Obi-Wan knows his reaction would be different.

At Padmé's comment, Obi-Wan breathes out a soft laugh, looking down at his hands. "Well, perhaps a bit of foresight was lacking in that moment, yes," he agrees. "But love can be rather all-encompassing, can't it?"