As posted :
So before you download, let me explain how it is played (also this is just my own opinion.)
Downloading the game is free. You play per tickets —you start with 3 and one should be recovered every 3h. If you want your romance with a guy, you'll have to use the "premium" choices, which needs diamonds. You start with 30.
Diamonds can be bought but if you play enough times the minigame you get points then can exchange it. You need three same characters to get points, and it's not that many depending of the character. You can, however, watch a video that will multiply it by 3. Imagine you get the dark haired boy character, it gives you in total 9 points. Multiply it by 3 in total you go from 0 points (at the start of the game) to 27.
The company loves the number 3...