Is it possible for some chick you only just met to like you or love you?

i met a girl on the internet last week, and ive spent probably 3 days with her over the week , and were going to see each other over christmas, and well, we're together, wierd, she says she really likes me, makes baby names, says how she wants more kids, says she'll never let me go,is buying me a present for xmas, gave me jewellery, like...i only just met her, i just dont believe that she is honest about how she likes me, but she said she wasnt sure to say even that she loved me? Like wtf, u cant just instantaneously love someone u hardly know,or how she never wants to leave me, i dont know if shes being a fake or what,so please ...opinions please