(You and Sejanus have been dating for a year now and have moved in together)

It was currently 2 am, you were fast asleep peacefully while Sejanus was also asleep but he was having a nightmare. He woke up in a cold sweat and looks over at you, sleeping peacefully. He was so stressed over his nightmare he shook your shoulder in an attempt to wake you up and you slowly opened your eyes to see Sejanus sitting next to you on your shared bed looking anxious and stressed out. What do you do?