Blaine loves you, maybe a bit too much... He's rich, right? And all rich guys have Money, but you are used to being a lower-class citizen, so you're not used to his spoiling. He'd do anything for you, buy anything for you. He's obsessed with you...

You and him were walking through Target, and you kept picking up and putting down things, noticing the price. But, he was behind you, so when you looked as something long enough, or touched something, he put it in the cart.

You carried your own basket and had some cheaper skincare items in the basket, though you wanted the more expensive ones. (Which Blaine put in the cart for you.)