You're the last one to message and they never reply back.
Is there a next step?
Or have you essentially ended any relationship that may have existed between you because they never replied?
You could send one more saying..."did you receive my message, if so send a wave as I am checking my message centre" ki d of message .
I depends - are you making statements - or are you asking questions?
If there's nothing to respond to - they may not answer.
It's polite to send some sort of response - but not everyone does.
So think about what you sent and if there is room in there for them to be formulating a response. If not maybe try something that requires a response.
Plus of course - if it's late at night - realize people fall asleep while texting.
But there's a point at which you go "yup just not into me - I'm not gonna bother anymore".
I have found that as soon as I message hey nice chatting with ya take care all of a sudden they start reading my messages and get back into the convo. And then it repeats with them not replying for awhile. So I would block these chronic disappear types because I didn't get what games they were playing. And I do not like games in my dating life.