"List your rules for maintaining a healthy relationship."
Here are my top 5. But what do I know? I've never been in a relationship. Don't give me that look. I'm in middle school.

Be Honest.
What else is there to say? Never keep any secrets--not even if you think it will "protect" them.

Keep it funny.
Otherwise the relationship will die out.

Keep it real.
Don't be overly funny.

Make sure the other person knows how you feel about them.
"I love you"

Listen.
Sure, communication is obviously important--but the other person's got stuff to say too.