I yesterday watched a movie and saw a character dealing with his emotions in a very rationalist typical way.
The movie was called Ice Age 2 and is a animated movie about prähistoric animals living at the end of an ice age. There is one main character called Manni, who is a mammoth and believes himself to be the last of his kind. In the course of the movie he meets another female mammoth, he begins to like and after them having a little troubles to get along with each other, they have a talk and come close to each other.
And now my point: after the have become closer friends, Manni says: "Do you know what I think ? Maybe we can save the mammoth from evolutional effacement now."
That was a absolute rational thought there and it implies that his feelings where actually already set. There was no moment before, where Manni expressed his feelings and no moment he tought about it or shown some hint to be really aware of them.
But saying his sentence, he implied to have emotions for her, so that whole emotion thing actually happend, but on an instinctive basis, he himself was not aware of.
This is just an example and does not count for every rationalist, but I can imagine that some rationals can identify with this, I myself can.
She, the female mammoth, by the way was pissed off and thought Manni wants to get her laid xD. That was a well suited gender stereotype .