What book series should I read?

I want a book (books) that I could read in the summer, even though I just graduated from 10th grade….I still want to keep myself reading and getting ready for my first semester in high school. It will be difficult so maybe I won’t even have time to read the books I enjoy. I love reading romance books, I have never really read anything else than that. I don’t think I can read the Twilight or Harry Potter Series.
Also I’ve never read series-books. I would like to try that out but the book will have to do with love and sex…I don’t know if they have comedy in books:/

So please help me out and just tell me the books you think are nice and I would enjoy them.

thanks

xoxo’z