Age relationship

I'm 15 and my boyfriend's 21 and people are saying it's wrong and calling it paedophilia? I've asked him loads of times why he wants to be with me and he claims that he "loves" me which I believed at first but now after reading what everyone's been saying about the situation I'm finding it quite hard to believe🙄 I'm so confused, I don't want to be  trapped, if you know what I mean? Can someone please suggest what I could do? I'm literally in tears, idk what to do😫