OMG, if you are using RMXP to make a Dating Sim, may I ask are you doing it RPG style or are you doing it Visual Novel style like I'm Gonna Serve you, a Maid's Story, and many other hentai games that (guess who) has played? I can help you out a bit in terms of making either kind, but I think what you're after is an affection script that would log a character's affection depending on simple actions. I could actually write an event system for this, it's not too difficult, but you need to learn variables and you'd probably need a menu system made to reflect it, and a lot of conditional branches.