Lily looked at Severus, studying him carefully. She did not want to make him uncomfortable. Though the run-in with Harry had been upsetting, she didn't want to let it ruin the whole night.
"We can leave if you would like to. We can still hang out, back at school." It was not particularly what she wanted to do, but she would do it for him. Again, he had managed to handle the awkward situation perfectly. She forgot her worries about Harry and focused solely on Severus now, wanting to make him feel more at ease.
"I'm happy just being with you," she told him, and kissed him tenderly on the cheek.