It seriously is. Food the girls like and sex, that's all I know of for raising loyalty. Cumming a lot for hero points I think (blowjobs seem to help with that). Oh and you can give them more than one food item, like a drink and a bowl of salad for example.
The game says to click and drag the mouse but that's just for the camera, to actually move around use the options in the top left.
If it is actually freezing I'm not sure, my game will stop responding a lot on loading screens but after a few seconds pass it always fixes itself. Maybe move the game to the desktop, or try unzipping/redownloading the game again in case something got corrupted.