"Steph..." Benjamin began and he let out a small sigh, but showed a smile too. "I wouldn't suggest it if I didn't want to." 
Why was she so negative all of the sudden? Benjamin tried to understand what had happened, but he decided that it was best to just ask when they were alone instead of starting to assume things that probably weren't correct. 

He turned his attention to Harriet when she asked him if things were okay. "Yeah, no problems here," he assured her. "Although I have to say I'll be glad when we're back so I can move my legs freely again. Cars are great for getting somewhere fast, but sitting still is not my thing. It doesn't help I'm tall and I usually need a bit more legroom to really be comfortable than what most cars are designed for."