Firstly, u must ask urself this questions
1. Why u like her ? isit u see her chio, so u like her ? u only see
her once or twice, so wat makes u tink that she is "THE ONE"
?
2. Where u tink this relationship will head to >??
3. How will she react if u broke the news to her ?
4. Why her ? no other girls ?
5. Will her relationship with her sister be strained as aresult of
u dating her ?
6. What is the risk ?
These are few ques. u should ask urself. IN any case, i would wish
u all the best, if u r really interested n mermerised by her
charms.... 
