help!!!! my boyfriends mom bought me a gift??

[KoreanBabyDollt]

Hi! umm my boyfriends mom bought me a shirt.... umm weird??? ive only been with him for about a month (so she thinks) because we kept our relationship a secret but we have actually been together three months... she bought me a shirt from macys... is this weird my boyfriend is 18 and im only 17 also ummm ..... my boyfriend says that his mom has bought his past girlfriends gifts too like heels and shirts and stuff... umm help??? im weirded out kinda
what does her buying me a gift mean???