Ignore the text.

Leaving your phone on the charging station you decide to ignore any new drama. If David brings it up in the future you will deal with it at the point, until then you're going to ignore the whole thing.

Even if the unknown caller is cute, you have Sandra to focus on, and she is more then enough then any girl Ragnar might have come across.

Sitting down at your laptop you begin to work on your current assignment. Your mind, however, keeps on drifting back to Sandra and how you really, really want to call her as soon as possible.