"(that he would always love me, but couldn't be married to me anymore)"
I don't see that he wrote that in the card in your previous post. If he didn't actually write this in the card, then, that's alot of self-talk that is discouraging you.
If he did write that in the card, then I would have suggested that you calmly give him back his gift and tell him thank you for the thought, however since it was your anniversary the gift was not done in the spirit of that. Then just walk away.
You don't know how ripe the timing is for him to feel the loss of your right now. If he feels you slipping away he will come closer.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.