Why would a girl act so hot and cold?

This is a coworker of mine, I’m pretty sure she likes me but sometimes she’s hot and cold and it’s driving me fucking nuts. I’ll give list off why I think she likes me and then explain the hot and cold behavior. She teases me at work, hits me playfully, she’s drunk texted me before, she’ll often keep the conversation going over text, she’ll sometimes hit me up about random shit, she uses a lot of emojis, she remembers all kinds of shit about me, when I added her on snap way back when I forgot to add her back and she called a mutual friend and was upset about it, she copies the way I text and slang I use, she’ll sometimes randomly slide up on my stories, I could go on and on…

However sometimes she takes forever to respond and every now and again she’ll text me pretty dryly or leave me on opened. Sometimes (though rarely) at work she seems to not really wanna talk. This uninterested behavior is on and off (more off than on) and it drives me nuts.

What are the reasons this could be happening? I know she’s at least talked to a couple guys during this time period and I haven’t really outright flirted with her but still, it’s weird. If she thinks I’m not interested why wouldn’t she just go cold and stay that way?

Why would a girl act so hot and cold?
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