To move on-

1. To leave.
"His mom told him that he should move on with his life"

2. To ignore.
"To see a beautiful flower, and not pick it. You will see it, then never see it again.  You move on."

3. To leave her alone.
"She left you alone, so you do the same, move on."

4. Beautiful, isn't it?
"To move on?"

Antonyms: to obsess, to bring up the past, to pick the flower.

Pathetic, isn't it?
You'll never move on. You're grasping at the past.
Grasping at  innocence.