If I'm gonna speak in a legal sense, "you're a kid. This isn't right, Mashuu. You should end this before it hurts you, her, and everyone any further."
In a moral sense, "love has no boundaries, and your feelings for her are clearly blooming into love. But if you really love her, wait until you're older at least."
In a who-the-heck-are-you-trying-to-be sense, "GO AND TALK TO HER MASHUU WOOHOO HE LEVELED UP HIGHER THAN MOST ADULTS IN RELATIONSHIPS! COMMUNICATION YASS!"