You should tell her, they should be ok with it because they are not in love with their cousin and plus if she is really your best friend it will be cool with her.
Just say it. It is your cousin, not your lover. It is his best friend, not his pole smoker...
You have to tell them
Well, tell only your best friends and make them swear not to tell anyone. Then, if you're still dating for a while, go ahead and tell a couple more people at a time.
Ask her. If she is really your best friend she would have told you and if she is your friend she'll tell you when you ask her.
you should try asking your boyfriend to talk to him
No my best friend is Chris Evans cousin she would tell me if she was related to him too
Well, maybe she gave you a pity kiss or she likes you secretly, so by dating your cousin she's trying to get closer to you? And if your friend tells your cousin, he/she is not a real friend. So what you should do is tell your cousin yourself and explain to him the situation, no matter how long it takes and how many slaps to wake him up. Then you go to the girl and ask her about it. Your friend is just a minor character in this dilemma.
just tell him and get over it you should feel happy for her she is your best friend
You tell your friend about your feelings. don't tell them to brake up though!
you just do it. mmk.
Tell her...if she was really ur best friend she would understand and try to fix something out <3
If your best friends cousin likes you? um... well what i would do is tell my best friend and i would also want to make sure that if you where to go out with her/he it would not make them mad! But if you like them then i guess you could ask him/her out but i would wait for him to ask you out! but if you don't like him back just tell "Sorry i really don't like i am not trying to be mean, but maybe we could just be friends.