Is it healthy to wash your hair daily?

I have been washing my hair every day for as long as I can remember. My boyfriend used to do the same, but started washing his hair every 2-3 days instead, prioritizing conditioning and using leave-in sprays, and his hair got super curly and he loves it. He suggested I try washing every other day, but if I even go one day without washing my hair it gets SUPER greasy. Like visibly oily, and it feels and looks awful. Is this normal for anybody else? When I wash I condition as well, I usually let my conditioner sit in my hair for about 3 minutes before washing it out.