Oh well. I sent him the 0.055
BTC and did get nothing more than a pm stating that "iam not a scammer".
I wait a bit longer for an explaination but i really hope there dont exist a bitcoiner that really creates a scam for this amount of money.

Someone like that would be really hilarious.
His junior account is worth less than 0.055.
Never go first with less than the other part account is worth, the odds of being scammed always will be very high.
Send first is always a risk, anyway