Hey guys...so, I need some help with a few characters that I just can't flesh out. I'm not a big fan of character sketches; I prefer to work characters out by writing them. But anyways...here's the situation:
So my MC is named Alleyni...she's a princess, doesn't want to be, jealous of her sister sort of situation. So I decided to have the son of the evil king from another country (the king's name is Vinrys...I don't have a name for his son yet) come and somehow they fall in love. However, he's just using her and ends up getting engaged to her sister. I want him to sort of break her heart...but here's the problem. In a short amount of time, I want her to fall in love with another dude, Varyn, who's this soldier who just got promoted and is trying to win Lyssa's (Alleyni's sister) hand. They end up together, but I don't want this to just be a rebound relationship. Due to time constraints for the rest of the plot, I can't have too much time, so I'm wondering how I can make Vinrys's son and Alleyni fall in love enough that it's heartbreaking and angering but not that much so she can fall in love with Varyn.
One thought was to have Vinrys's son pursue her, so maybe she doesn't fall in love with him as much...I'm just not sure how I should do this....so any suggestions on what I should do here? 
P.S.: I really like to build incredibly awkward love triangles...except mine always turn into gigantic diagrams, I have several pages dedicated to showing who is in love with who, what they do about it, and what happens to their relationship...fun stuff.
Any advice? Anyone at all? Thanks 
