When Rachel gets drunk at a bar, hurt letting herself fall in love with her boss, even after knowing it would hurt her the most in the end.
She doesn't like alcohol because it takes her emotions out of control. But on that day, she'd rather be drunk than remember the one she loves. She knows Jayce wants nothing but the occasional sex they have from time to time, and that her feelings will only make matters worse. Rachel doesn't want the same fate as her mother, but she can't stop following in her footsteps, falling in love with somebody who can never love her.
But the thought of losing Jayce makes her forget all her troubling past.
Later, when Rachel was all drunk and lost, Jayce came to her rescue. That led Rachel to confess her feelings for him, making Jayce realize that falling in love wasn't as bad as he thought it would be. Later, he takes her to his home, promising to confess her feelings to her in the morning when she is sane.
But in the morning, Rachel remembered her silly confession. In her mind, she thought that this could be the end of their relationship and left Jayce asleep, with the commitment of never seeing Jayce again.
But on waking up, when Jayce can't find Rachel. He came to know that she was gone, leaving him alone with no sign of her whereabouts. But he can't leave her, not now, when she's the only hope of happiness in her life. He wants Rachel back in his life, in his arms, where she really belongs.