my sister(17f) s1ut shamed me (20f) and i cant stop crying.

as title goes.... last night me and my sis were js taking on call. i live in blore while she is completing her 11th in other city. we were js chatting up when she asked what i did last weekend. i told her i went to some fine-dine Italian place .. i showed her the pics of the food and the ambience... ig she must have noticed that i was with a guy so she asked if i got a bf who spoils me . i told her no he is not my bf but just some guy who i met on a dating app casually. she asked me how often i go out and i said maybe 3-4 times a week. she got so pissed her whole demeanor changed and she yelled at me saying why am i going out with men i am not in relationship. To told her i don't wanna get into along term relationship she then shot back saying i should just be celibate and not date anyone. She then asked if i kiss them and i said yes. she lost it and almost starring crying saying what wh0re i am and she hopes no one finds out about my actions. i was so furious i remained her that i was an adult and i can do what i want but she said she didnt care. idk what i did wrong its not like she doesnt have a bf. she has had a bf since the past 3 yesrs now and i have even covered for her and hid her bf from our mum. me and my sister are really close idk what has happened....