It this fair?

Me and my boyfriend just moved in together and he expects me to pay half of everything everything calculated would come to 1946 in total I work full-time at Walmart he works full time for the city we live in and part time at a hotel he makes about 2500 a month and I make 1200 I'm also the one who does all the grocery shopping I also pay my car payment by myself even though we both use it I don't have a problem with helping pay some of our monthly expenses but I don't think it's fair that I should pay half when he makes more money than me am I in over exaggerating or would you agree