First of all, we do not dream about a certain person simply because we would like to. A person only enters our dreams because they personify a particular idea in our mind that the Lord wants to bring to our attention. It is not the universe which makes this decision.
Secondly, interpreting any symbol in a dream is not the dream's interpretation. All symbols need to be considered as to their relationship with each other. One needs to view the entire dream.

What I can see in the 3 statements you posted is:
1) the first two statements both mention "on the big screen". This points to a situation in which you are making a big issue of something you imagine. [Are you imagining a lot about a certain person perhaps?]
2) The name Eleni was also the name of a film - which supports the idea of imagining something about a person. In this case it would imply imagining something about a feeling you have (as Eleni was female). She died in the film.
3) The Olsen twins I found are fashion designers. Because they are female, they would represent a feeling you have. in this case perhaps they could represent a feeling that is "in fashion". While they suggest a feeling that seems like a double blessing, it might also be a double blessing that what is "in fashion" now can easily become "out of fashion" at a later time. [Could this relate to any feelings you might have about a certain person?

4) Buying red shoes means accepting some understanding or experience with strong feelings, especially of anger.