Give up, Receiver, it's all over.
You lose is an unashamed declaration of victory, whether in love or war. Should such an unabashedly triumphant message be sent, it is courteous for hostilities to cease immediately.
Receivers can accept the Bearer’s victory with
You win or
I can take it, or reject it with
You've gotta be kidding me or a spurious
Who, me?.
This means war! declares the commencement of further hostilities,
What's happened to us? laments the conflict, whilst profound negative effects are acknowledged with
Despair,
Fear or
How could you?.
I give up concedes defeat, while
Never stoutly refuses to do so.
Danger issues a threat, and
Evil laugh implies one, as well as neatly undercutting the Bearer’s certainty.
Grow up disclaims a Bearer’s putative immaturity for asserting such a victory, while
C'est la vie or
Worth a shot express resignation.
One last chance asks for a last chance,
Truce for a break, and
No regrets declares that whatever contest the parties have been engaged in was more than worthwhile.