can u fall in love with ur sister is it bad or what

You can... particulary if she looks like Alicia. But it is not recommended... Is it love? Puppy love? Or something else? All I can tell you... is that you are going to get caught... And severely punish...

it is very bad man you won't have to do this change your mind

my cousin had crush on me. And I felt not right. I stopped it before too far. I told her that isn't right and I think she understand.

Oh my! I think it is not very good to feel that way for a relative. It will be very complicated and very difficult because I don't think that your relationship will be tolerated by both of your families and the people in your community as well. Having intimate relationships with a person within your bloodline is considered as incest which is frowned upon by society and by different religions as well. I suggest that you just stop entertaining this relative of yours at this early stage so that it will not get worse.