For the same reason don’t go fishing for compliments on a date with a German guy.More likely than not, he will be starkly honest with his comments; so if you intend to ask him how you look or if red color makes you look fat, be prepared for the brutal truth.
Alternatively you can also use the German’s obsession for rules to attract his attention.
Say you desperately want to get a guy speaking to you but are hesitant to make your interest obvious.
You may even be required to take public transportation back to your pad once the date is over since German guys rarely see the need to hail a cab for you or drop you home themselves.
However what they lack in these finer points of dating, German guys make up with their efficiency and perfectionism.
Also a German guy can be quite literal during conversation and so innuendos and allegories that bring out the imaginative best in you might go off in a tangent with your date.