At my english course, there was this girl i stroke up a conversation, she was smiling a lot while we interacted, and even started teasing me, I used my cellphone a lot during these classes so when i gave it to her she said she was going to confiscate it from me due to my addiction, I went along. After the class ended, I asked for her instagram, but I said because she was funny(I know this was a rookie mistake). We started talking but then out of boredom( a few weeks later) I sent her a pickup line and she said she only wanted to be friends

Was there a possibility she was interested in me in the beginning or she just wanted to be friends?