I've got a few more for ya.
White Album 2 - The ending is kinda frustrating for some, but the characters in this series are phenomenal.
Acchi Kocchi - I personally find the romance in this series adorable, although it's not much of a focal point. It's a comedy for the most part.
Kokoro Connect - I didn't get the pairing I wanted in this, but most other viewers seem to think the main pairing is preferable anyways. If you agree with the main pairing also, you'll likely cherish the romance (they're very popular among romance enthusiasts). The drama in the first arc is fantastic, although it kinda dips after that. It does pick up again in Michi Random.