my story

so hsorry is is my story i need help. i have he biggest crush on this guy. every time i think of him i just start smiling. he is about a year and a half older then me. and we do talk a bit. but everyone ships him with my sister, who is also a year and a half older then me. and every time people say that i just get so so sad. but i always just say omg yeah i totally agree they will be good ogether even though i hate to say that. me and my sister aren’t very close and i would not want to talk to her about how i feel. advice please xx