Yuno And Yuki
[My Nikki] Does Uno really like Yuki?
She loves Yuki.
This meant that he could love the one who was comforting him at the time. It ended in Yuki, which is why he loved her. If it were another boy, hard, she would fall in love with that other boy.
Then he said that his love for Yuki was real, but his love could be the target of someone else.
What did he do, and why did he always have to travel back in time? He did this over and over again to refresh his good times.