Would a guy reply back if he wasn't interested?

I asked this guy when he's going to take me out on a date and he replies by saying "when are you asking me out". I have told him that I like him and he said it back to me. But I'm still not sure what is wrong. I'm 23 and he's a couple of years older. He's always busy with work and it takes him like 2 days to reply back to a text. I seemed to be interested in me but now I'm not sure...

We've been texting back and forth but nothing is really happening.

If a guy isn't interested, he would never reply in the first place?

W
Would a guy reply back if he wasn't interested?
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