Accidentally pregnant so I'm leaving now...

 The sun shone through the window and awoke her from her slumber. She had a hard time sleeping the last couple of weeks. She knew the truth, but had yet to tell him. She was pregnant.

The baby was the result of a mistake, a one night stand, a drunk mistake. She had been with her boyfriend for a while, but it was too late to tell him. She was too ashamed and scared to tell him.

She had to leave. She packed her bag, wrote a note and left her apartment. She couldn't look back.

She left her boyfriend without a trace, without any explanation or goodbye. All he had was a note that read:

"I'm sorry, but I have to go. I can't tell you why, but I just have to go. I'm sorry for not telling you. I'm sorry for leaving. I love you and I'm sorry."