It was a little like torture for himself, watching Lexi tied up like that, squirming and hard and wanting him. Wanting to suck him off. Marco gave himself another short squeeze through his pants. "He could walk in any moment, pet," he murmured, moving closer to his head. He brushed his thumb against Lexi's glossy lower lip.
"Use something you wouldn't usually say," Marco suggested. "Like... Paris," Marco decided. He moved to reach for his riding crop, curling his fingers around the handle. He started light at first, hitting Lexi's thigh with it.
Marco paid very close attention to Lexi, gauging his reactions to see if he should do it harder the second time.