Should i accept her?

I have been talking to a girl since a year and half and we know each other since schooltime. We use to share reels etc only on instagram. She is a very nice girl, complete green flag. She initiates convos, wishes me on festivals and wishes goodluck before exams etc

Recently, she said she feels for me but i turned it down as i have feelings for another girl but haven't asked her out yet.

Should i stay friends with this girl whom i rejected her or not. I know it would have hurted her a lot as i rejected her.

She said me that we can stay friends atleast.