I'd been trying to think of the right words since the night before.

"You have not heard from him since the last night he was here?"

Yet something must have happened since last night to start him off.

But then, since last night, nothing in his life was making sense.

I've been doing a lot of thinking about you since last night, and I may have come up with an answer or two.

I have known that since the first night we met.

His eyes hadn't looked like that since the first night he'd come here.

Nearly a year has passed now since the night of the fire.

He hadn't been back to her room since that one night they had spent together.