I'm not a big texter, but with most friends find it pretty straightforward, we might text back and forth now and again.
However, I have a friend, let's call her Amanda, who will message me (eg, how are you?) and I'll reply with some chat and ask how she is or ask her a question, and then just nothing, no reply. It's on WhatsApp so I know she's read it and is on there a lot. It's not like she has done it just the once, this is most times.
I find it all a bit awkward tbh and I come away feeling quite crap. Is it odd to text someone and when they reply just to ignore them? or is it just something some people do?