Green Day and Alanis Morisette both had songs about being alone IN someone's room/house. That is damn creepy in my book! I'll go look for the song titles.

Green Day "All by Myself"
I went to you house, but no on was there,
I went to your room,
I was all by myself,
You and me had,
Such wonderful times,
When I'm all by myself....

Alanis' song "Forgive Me Love" is too long for me to type out and I dont have copy n paste on my phone sooo the gist of the song is, she goes to someones house without ringing the bell, no ones there, went in the bedroom, smell his scent, danced in the shower, laid on his bed, got naked and put on his robe, went through the drawers, found his cologne, ran a bath. then noticed a love letter from someone else and took revenge by putting salt in his bed.

if you aren't listening to the lyrics, it is a pretty sounding song, but the lyrics make it creepy, lol

How about "I Will Follow Him" by Little Peggy March?

Love him, I love him, I love him
And where he goes I'll follow, I'll follow, I'll follow

I will follow him, follow him wherever he may go
There isn't an ocean too deep
A mountain so high it can keep me away

Yep.

AC/DC-"Night Prowler"

I'm your Night Prowler, asleep in the day
I'm your Night Prowler, get out of my way
Look out for the Night Prowler, watch you tonight
I'm the Night Prowler, when you turn out the light ...
Too scared to turn your light out
'Cos there's something on your mind
Was that a noise outside your window?
What's that shadow on the blind?
As you lie there naked
Like a body in a tomb
Suspended animation
As I slip into your room

Carly Simon's "You Belong to Me" :)