I find it obnoxious when fandom gets up in arms about two teenagers dating because there's maybe two or three years age difference between them. I even agree that between your average 14-year-old and average 17-year-old, there's probably some maturity difference and I wouldn't recommend it irl. But it's also hardly an abnormal, perverted, unethical occurrence. It's perfectly biologically typical for teens to be attracted to each other. No need to get up in arms about it. Especially in like... anime, where the ages are often somewhat arbitrary.