Yes, you should let her know; however, also reassure her that you will not act on that feeling. Thus, she will know how you feel and be able to avoid hurting or offending you.
I'm not sure if this will help but does your boyfriend like your cousin? If you have faith in your boyfriend then even if your cousin really DOES like him, you know that your boyfriend won't cheat on you. If he really does cheat on you then all i can say is - you deserve better than that. As to how to tell ... I guess you can talk to your cousin about it? or you try to talk about your boyfriend to your cousin and notice her reactions and expressions.
You can always tell your cousin you love them. But it is not commen to love your cousin like a girlfriend or boyfriend.
yes you should probably tell him. But tell him that you have a boyfriend.
Politely ask your cousin what she is doing, and then if that doesn't work, tell her that he is your boyfriend and not hers so she needs to back off and stay away from him.
just tell ur best-friend that u like there cousin and see what they say if its ok then try to get with him
sure, if you want to like him, that's up to u! you just have to tell your boyfriend. but is your boyfriends cousin dating anyone?
Tell him the truth, say you like girls.
you should tell him why you like him. pretty straitforward stuff
give it a shot
Tell her how you feel. If you really fell that you like her more then just tell her
what you have to do is tell her ASAP ! before he says you where the one flirting with him.!
You don't have to tell your cousin such things. If you don't know how to do it, don't do it.