Age gap

Okay so my boyfriend is a year younger than me and I’m going to turn 18 in a couple months. I’ve thought about this a couple time now and he turns 18 until I’ve already turned 19 and it just seems wrong to be in a relationship like that. I don’t want to be judged or criticized about it but I love him and I don’t know what to do. My father already criticizes me about it but I don’t pay attention to him because he dated my mom when she was 16 and he was 25 so his opinion doesn’t matter to me but others opinion does. I don’t know what to do.