"and that we will someday meet" take the and out of that line it's not needed!

plus "I suddenly hear a long beep" i don't like that line, it sticks out to me as weird try this

"A continuous beep turns to one
Now knowing that you’re gone
A tear rolls down my eye
Exiting the door, a goodbye to you." remember only suggestions for this is your poem and you are the poet .

this is a really good poem, you certainly have improved my dear!

~Jacklyn

"I'm sorry if I hurted you
I really didn't want to
wasn't thinking straight
just trying to act cool
in front of my friends."

That was my fave stanza although it should be 'hurt' rather than 'hurted'.
Apart from that, a very heart wrenching poem.
Very nicely written m'dear
5/5
*Gem*