I don't feel the love anymore

I don't feel like I'm happy with my boyfriend anymore. He's being really mean and teasing me as in calling me names like we usually do. But for some reason lately it's making me cry and I just I don't know i feel like I'm not happy anymore that it's not working out. It's been a little over a year. I love him I want to marry him and I want to have his babies and grow old but honestly I just hate him at the moment. What should I do?