The ferris wheel scene from Junjou Romantica. The whole series is really romantic, but I think this is the most romantic part because it's the first time Misaki really admits his feelings to Usagi-san.
All from Anime Angel – Jäger der Finsternis Beats! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Yui: But I can't move! My body can't move! Will Du still marry me?
Hinata: I'll marry you! No matter what kind of sickness Du have! Even if Du can't walk oder stand, oder even when Du can't have kids! I'll still marry you! No matter where oder how I meet you, I'll fall in Liebe with you. If I can meet Du again, against the 6 billion to 1 odds, and even if your body can't move, I'll marry you.
Yui: Thank you. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Kanade: I noticed when I stabbed Du the first time, that you, that Du didn't have a heart. Du regained all of your memories when Du fell asleep on oben, nach oben of my chest. Du were listening to the rhythm of your own heartbeat. Yuzuru, please. tell me, repeat what Du just said. Otonashi: No, I won't. Kanade, you'll disappear!
Kanade: Oh Yuzuru, please.
Otonashi: I can't. I CAN'T DO IT.
Kanade: Yuzuru! Please let me believe in everything Du believed in. Let me believe that, life is worth living. Yuzuru.
Otonashi: Kanade, I Liebe you. Let's stay together forever. Let's stay together forever and ever ok?
Kanade: Ok, thank you. Thank Du so much. Thank Du for loving me.