Liam and Trouble.
Liam's first reaction, in all reality, really shouldn't have been to jump away from an extremely beautiful and sexy woman laying in bed next to him; still, it was hard not to when, A, women weren't allowed in here, and B, this was your best friend who was most assuredly not a Ravenclaw. So yes, he was surprised, but when he finally relaxed he did slowly move to lay next to her again with a confused look shown in the curve of his brow.
"What? Lockdown... why?" Liam looked towards the window and saw the shimmering example of a dome that suggested a protective barrier was cast over the entire castle. He furrowed his brow again then looked to her and frowned, "Is everyone okay? Are you okay?" Asked because she came here instead of Slytherin.
Yet, when she mentioned being closest here it did make sense, and then he shrugged, "Yea... I always kind of zone out before dinner. I can play music in peace during this time a bit easier... still..."
He finally smirked, "Should I make some crude joke about a lockdown being required to get you into my bed?"