The phrase "to love this sweater" means to have strong positive feelings or affection towards a particular piece of clothing, specifically a sweater. Full definition
I absolutely love sweater dresses and wear them often during fall and winter. (theautumngirl.com)
Below I have paired it with dark jeans and black boots, but I also love this sweater with distressed denim and brown boots. (theautumngirl.com)
I just love the sweater so much I figured deal with it - but you positioned your scarf so well it all totally works - head to toe PLUS that nice new purse! (whenthegirlsrule.com)