Surely not the end of the Pet Shop Boys, right? PopJustice:

Finally, and most importantly of all when considering whether or not this would be a good farewell single, the chorus seems to be about a loveular relationship but could also be about the relationship between Neil and Chris: "together's amazing, together we're blazing, together we'll go all the way". The middle eight contains another oh-dear-this-all-sounds-a-bit-final line, in the shape of "everything's easy in this state of mind, the world starts to fade as we leave it behind".

We don't actually think this is a farewell single at all, incidentally. This said, we haven't contacted Neil and Chris to ask them to clarify in case they come back and say 'well actually yes'. It is better not to know about these things until they actually happen.
IN SUMMARY: Amazing.