Answer:
Try "Things Change" by Patrick Jones or "Dreamland" by Sarah Dessen, both are very good novels about teen relationship abuse. They both start slow, but believe me give them a chance cause once the start to get good they get really, really good. You won't be able to put them down after awhile.
"Speak" by Laurie Halse Anderson is a great book of a similar topic, but the issue in this one is far worse then abuse. I won't ruin it for you. This is another good read that will pull on your emotions.
If you want to try something on a higher lever I highly recommend "If I am Missing or Dead" by Janine Latus. This book is more of a true story about how a sister has to deal both with her sister's abusive relationship and her own. It is a great book, and definitely a must read if you like books in this category.
~ Kyrie
Also there's a very good poetry book called "Slamming Open the Door" by Kathleen Sheeder Bonanno which is a collection of poetry written by a mother whose daughter was murdered by her abusive boyfriend.
All of these literary works will really pull you in and you find yourself laughing and even crying with the characters. I very highly recommend all these books and hope that at least one of them will fit in with what you want to read, if not open your mind to reading new things which is always a good thing in my opinion. :]