Bold: Highly recommended.
Absolute Duo // Action, Ecchi, Harem, Romance
Accel World // Action, Romance
Akatsuki no Yona // Action, Comedy, Romance
Ano Natsu de Matteru // Comedy, Drama, Romance
Ao Haru Ride // Comedy, Drama, Romance
Aoi Hana // Romance, Shoujo Ai :>
Astarotte no Omocha! // Comedy, Ecchi, Romance
Aura: Maryuuin Kouga Saigo no Tatakai // Comedy, Drama, Romance
Bokura wa Minna Kawaisou // Comedy, Romance
Baka to Test to Shoukanjuu // Comedy, Romance
Byousoku 5 Centimeter // Drama, Romance
Chuunibyou demo Koi ga Shitai! // Comedy, Romance
CLANNAD // Comedy, Drama, Romance
El Hazard: The Magnificent World // Comedy, Romance
Gekkan Shoujo Nozaki-kun // Comedy, Romance
Hataraku Maou-sama! // Comedy, Romance
Higashi no Eden // Action, Comedy, Drama, Romance
Hitsugi no Chaika // Action, Comedy, Romance
Hoshi no Koe // Drama, Romance
Hotarubi no Mori e // Drama, Romance
I think this is way too many, not gonna continue. XD
Just search them on MAL or something, too lazy to link them.