My 4 year old hurts my feelings😭

So, lately my son has been saying hurtful things that my husband think are innocent. For several months my husband has been telling our son who does he loves more daddy or mommy? My son always replies “daddy.” When he says mommy, he tell him I’m not going to buy to toys. So now every time his answer is “daddy.” So lately I feel like I’m my son’s step mom. My son tells me “you’re not my mom, I don’t like you and I don’t want to see you.” I have told my husband and I feel like he’s proud of it. My husband gives him a kiss and plays with his hair. I’m really hurt by the things my son has been saying and I get mad at my husband because he doesn’t correct him. Should I be sad? Or just think that he doesn’t what he’s saying?