Diet and workout buddies in Germany/NRW?

I just moved here last year from Frankfurt and i am looking for local friends trying to get fit for summer.

I have to loose about 6- 8 kg, not sure exactly cause I was too scared to step on the scale this morning.

I am passionate about running and Zumba and plan to join a gym this summer. I would love to get into swimming but I got to loose the love handles first... And i also want to start biking more. It would be great to find a workout buddy, especially for the pool and biking track.

Apart from that I also appreciate any international friends, always useful to learn the word for certain foods in several languages.

That's it. Any takers?