Guy that I'm dating casually is ALWAYS online whatsapp but isn't chatting to me?

question as above. Do you think he's chatting to other women and he goes off and on which means he's actively conversing. or his online for like 10 mins at a time and till late. he's not chatting to me
Guy that I'm dating casually is ALWAYS online whatsapp but isn't chatting to me?
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