I must say that I can certainly comprehend what you're saying, although I do not have personal experience of it.

The closest I have experienced is having a feeling of falling in love with a fictional dream character (one who I do not know from real life) and wanting to meet them again in another lucid dream.

But, as with most feelings that are carried forward from dreams, it fades rather rapidly. I don't think it's unusual for your mind to generate emotion from dreams like this.