I messaged a *****y person who'd come back into my life then blocked them and I'm pretty sure they blocked me. They had read it and their profile pic showed that and it stayed like that. Then suddenly now where the profile pic was there's just a delivered tick, why has it just changed? Have they unblocked me?
They were *****y and you shouldn't care about them.
Move on and find someone better
*most likely an app glitch