YA science fiction/romance books? Mortal Instruments, Vampire Academy?

Im looking for a new series to read, preferably in the science fiction/romance genre but also maybe a dystopia kind of thing. My absolute favorite series are Mortal Instruments and Vampire Academy, both of which I fell in love with. I also enjoyed Matched, im eagerly waiting for the 2nd book to come out. Im not looking for a long list of books, I was just wondering if any had any good suggestions for a new series, and maybe explain why they liked it so much? Thanks! (Have also read Drought, Uglies Series, Hunger Games Series)