You had a heart condition. You had to check your watch to make sure your heart rate was fine.

One night you were out when you felt a presence behind you, Ghost. You turned around and smiled but he pulled you in and kissed you.

You just stare at him speechless so he asks.

"What's wrong? Heart beating too fast?" he turns to grab his phone and looks at it.

"All fine, chest hurts?"

That's the moment you realize that he synced your watch to his phone so he could always know you were okay.