The Stranger in my room

Jennifer Brown, a simple and innocent girl in the 2nd year of her college life,wants a simple life with less drama.
She wasn't a kid with silver spoon. Her mother was a single mother and her father left her mother after getting her pregnant. Although having a not so good past she wished to give a satisfactory future to her mother.
But destiny planned something unexpected for her which wasn't included in her plans. When her path crossed with the bad boy of the campus her life changed drastically. She no longer remained the unnoticed one.
Ryan Wilson, a typical bad boy and a spoiled brat and centre of attraction everywhere he goes.
Something unexpected happened when these two totally different personalities met due to fate. Ryan started hating Jennifer because she made him remember someone as a result of which he started bullying her.
But meanwhile something very strange happened with Jennifer, an anonymous person barged her apartment one night and took her first kiss. Eventually she fell in love with her anonymous lover.

But who was that anonymous person?
Was it someone from her past?
Or was it Ryan?
But if it was Ryan then why did he bullied her in college?
If he actually hated her then why did he kissed her?
~~

I was about to shout when my someone covered my mouth with very soft li-

Soft lips!
Yeah! Someone kissed my lips.
My first kiss.
With an stranger.

I put my hands on his chest to push him but he was so strong for that. I tried to kick him in balls but he blocked my legs from his legs.
He pinned me to the wall blocking me from moving and gently cupped both my cheeks in his hands and deepened the kiss.
I was utterly shocked and scared. I couldn't see him because of the darkness.
After a while I find myself slipping to his kiss.
I was losing myself to his kiss.
I was no longer resisting him whereas my hands were on his shoulders now and eyes were closed.
And I don't know when I lost my senses and started to kiss that stranger.
Who is this stranger?