If she is online on whatsapp but doesn't reply to me is she not into me?

I've been talking to this girl but recently, I've seen that she's been online and has logged in but hasn't replied to my texts when in the past she did. When she does reply she sends on average 7 texts which can be quite long, and she always sends lots of emojis but I think thats just what she's like.

I don't want to just become someone she texts when she is bored because I genuinely like her a lot. What should I do?

If she is online on whatsapp but doesn't reply to me is she not into me?
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