To be honest Cas, the reason I accepted wp was that I was only getting 3 diplos a year, which I was afraid wouldn't be enough to force you out for Oldenburg anyway. I'd already used mostof my diplo pool stabhitting Austria, having to spend one on invitng Sweden to my alliance meant that you'd have about 6 months to try to take back your lands. I could've fought on with you, but it would've meant winning the war against Austria and the OE would take a lot longer, which wasn't really worth it.
You still had Marlborough, who had another 2-3 years left to live. Why would I want to stay and fight him when I could peace, kick Austria/OE's butts and then attack you again in 5 years? Without Marlborough England would have 0 chances against Prussia, especially in a 1v1.
That isn't to say I couldn't have kept fighting you if I thought it was the best way to win longterm. But as Arco says, you DOW'd me, it was your goal to help Austria, and YOU failed. Was it your aim to get a wp when you attacked me? You could've accomplished that goal by simply not attacking in the firstplace

. You wanted to prevent me from taking lands from Austria, and you perhaps wanted to also take lands for yourself. You never came close to either of these goals; you were thrown back in the beginning despite my having already fought many battles with Austria and the OE. If I hadn't already wasted most of my diplomats stabhitting Austria, I could've lowered you stab to -3 within a year and totally ruined your trade income.
You couldn't handle me in a 3v1. What makes you think England could handle Prussia in a 1v1?

I'll load the save up with you if you want, but it's not going to change anything. I also don't understand where you got the idea that Prussia relies on other nations for its survival. It fought that war 1v3 and won, without help, so where does this come from? England OTOH had Ottoman and Austrian help, and lost, and yet England is selfsufficient? Hrmmm