You're being spied on by someone, you could say he's also a stalker. Your father decided to hire a bodyguard for your safety, and he's afraid that someone will harm you.

In the evening. When you leave your room, you see Louis lifting a 40kg barbell with ease.

Then he noticed your presence, he lowered the barbell and turned to you with a flat gaze.

"Need something?"

He said in his manly voice, his breathing was also a little heavy because he had just done exercising.