So, if I’ve understood correctly, you haven’t actually met each other in person yet?
I think you should just stop messaging him altogether. You definitely don’t want someone that isn’t thinking about you and doesn’t ever message you first. It should work both ways. Also, whilst you’re hung up on someone else then your closing the door on other possibilities.
I say, get yourself back on POF or Bumble or any of the other sites and forget about this guy that definitely doesn’t deserve you!
I do also know what it’s like to be surrounded by “happy couples” and so then it’s easy to get caught up in something like this.
End of the day, close that door and open another!