Another boy thing?

so there is this boy. he really wants to go fishing with me. i know fishing ew right but wed go to the beach and he is reli cute... nice body the whole sha bang. but my friend lets call her meme wants to come with us. this boy...momo is friends with her and all but she flirts with him so much which pisses me off. i cant talk to her about this cuz she will think i like like him which i do but it reli needs to be kept a secret until i tell him myself. she is a loud mouth and really annoying. i just want to go with him but i dont want to be mean.