Mind Monster

Esther was a normal once.
She had a normal life, a normal boyfriend.
She was in love and life was great.
Something happened, though.
She doesn't know what.
When her personality died, another was born.
Charles left.
Then came back.
Now, what happens?
________________________
Dedicated to Adam Charles;
Honestly, I thought of the name Charles before I remembered it was your name! I was going to name Charles "Adam" at first, but then I was like, nyehhh. I love you, and I will, for a very, very long time.