Starting out with a few similarities, the love interest for Katniss (more like love triangle) is portrayed very well in both the film and the book. Peeta projects his love for her once he is interviewed by Caesar Flickerman. It is more certain with the film due to Josh Hutcherson's acting ability to create the embarrassed, sensitive, love ridden adolescent; this made picking up that his love was real. Not forgetting Gale, in the film, there are breaks from the games that cut to Gale watching. I noticed Gale was peeved by the scene Katniss passionately kissing Peeta; therefore, Gale must have some feelings for his hunting partner. Jealously does not sprout out of nowhere. Gale's initial feelings for her have been threatened by the boy with the bread. In the book, it is very much the same, but Katniss, since the book is in her view, explains her feelings for both Gale and Peeta: how she feels, how she reacts, what her thoughts are on both of them, etc.
The Hunger Games