Would a guy keep replying to text messages if he wasn't interested? Please help?

If a guy (someone i work with) sends you text message continuously for an hour and this has happened a lot, does that mean he is interested? Would they waste their time on messages?
I sent him a short message the other day and he replied. Then two hours later he asked how's my day? Would they also ask this is they weren't interested?
By 10 years ago :: Dating
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