If you ever fall in love, expect it to hurt, and remember it.
Explanation:
"in the sweet pangs of it remember me" this part is tricky, "sweet pangs" basically meansthat the love thiu will experience will hurt, and thus they will be reminded of their past lover; "of it remember me". If thou shalt ever love = If you ever find new love, in the sweet pangs of it = it will be sweet, but tragic, remember me = you will be reminded of me in the end.
