Spud - try hooking up with the Munich ex-pat community - srsly!  They have a website and everything.   
When I was in between significant others I banged a lot of birds with kids - that is they had children, the kids weren't part of the act, that would be just weird.  I must have ****ged at least 3, maybe 4.  Heady days.  Anyway, my point being that the sex and that was good but I couldn't properly take on the responsibility of someone elses kid and it's not fair on the kid to have many "uncles" in their life.  I admire those that can do that, I thought I could initially but had to be honest with myself, for the kid more than anything.   
Good luck.