<human>: I'm 16, female, my boyfriend is 16, male, and we've been together 9 months now. The problem is that I don't really want to be together anymore. The other problem is that I'm not exactly sure why. I still think he's cute, smart, and sweet, and everyone else says that they can see how much he cares about me. But it just doesn't seem right to me. I really don't want to crush him as I still am fond of him, but I feel that if we don't break up, I'm just going to feel worse and worse about our relationship. So my question is what is the best way to break up with him that won't absolutely crush him?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I (16, f) want to end things with my boyfriend (16, m), after 9 months. What is the best way to end it without breaking his heart completely?