Lovers Liars

Lillith and Shawn couldn't tell anyone they were deeply in love. If they did, their parents would disregard of them, their friends would leave them, and their loved ones will fade. The reason: Lillith's parents hated Shawn for being sentenced to jail after he beat up a guy for a good reason. Shawn's parents hated Lillith because her parents thought of Shawn as a price of trash.
How are they supposed to love each other when they cant tell anyone?