Is this technically sexual flirting?

Starrr01
I guess I sometimes flirt with my coworker and last week I caught her singing a song. I laughed and asked her if she was singing and she said yeah and told her to be quiet because it was annoying. I was joking lol and was kind of trying to flirt. She’s joked with me too before about my height and stuff and compared me to a life size stuffed animal We’re both girls and I’m extremely femme. She’s kind of femme too.

She kept singing and later came near me and I called her annoying and she said she was gonna come over to my place late at night and sing me to sleep.

She’s told me she’s cared about me a few times before too. Was that remark flirting?
Is this technically sexual flirting?
2 Opinion