Action, reaction, motivation, emotion, all have to come from the characters. Writing a love scene requires the same elements from the writer as any other.
Nora RobertsDo you believe in reincarnation?...I was wondering why some connections seem so easy, so natural, as if they'd already been made and are getting picked up again.
Nora RobertsI'm sorry. It's Hard for me. I do love you," she said quietly. "Sometimes it scares me because you're the first. And the only" He held her there until he was sure he could speak, then eased her back, looked into her eyes "You've chaged my life. Become my life." He touched his lips to hers, let the kiss deepen slowly, silkily. "I need you
Nora Roberts