Feel like a gold digger

so i don't have a job right now but tryin to get one asap. im in college now. My boyfriend always buys me stuff and i feel bad... i don't ask for anything , basically food and he buys it for me because i don't have any money.., We been together for 3 years.. he's always the type to buy whoever stuff when we go to the store or get food...i just feel guilty because i want to buy him things too but can't afford it .. he buys me everything , Is it wrong he's paying for me ?