Personally I think this is a very silly rumor but I'm always interested in kpop conspiracy theories so here we go~
here's the original thread~
1. Her face turns from big smiles to suddenly a frown and eye roll when Jimin appears on screen. All the Twice members look at her awkwardly to see her reaction. (watch the video here)
2. She gets really excited about all the other songs played during the 1 hour long VLive that Twice had, but when they played 2 BTS songs she looked angry, didn't want to dance, and even walked off camera (with all the girls laughing and pointing at her - her dislike for BTS seems to be a well known thing to the twice members)
3. Fans catch her looking at him when she can and moving seats at award shows when he's near (so maybe its not hate??) (video here)
4. But some people say she's acting like a girl with a crush??