And again, I am blown away by the lessons that are polyamory based that are necessary for every healthy relationship.

Communicate, communicate, communicate.
Express your needs but don't expect your partner to be solely responsible for fulfilling them.
Think outside the box in order to have a successful relationship that you are happy with.
Societal expectations should never be your foremost concern.

While I don't follow this comic on a regular basis, the ones I do see always hit a home run.