Dich / Dir

Sometimes German says dich and sometimes they say dir.

Same with mich and mir.

What I learnt yesterday was this:

Reflexive verbs take mich/dich e.g. ich wasche mich

Otherwise it depends on the case: Accusative: mich, dich. Dative: mir, dir.

The words accusative and dative bring back hazy memories of Romanian classes at university but I still have no idea what they actually mean.  What I will say is that all the verbs I have come across so far seem to take mich and dich.

You can tell I've been learning from schlager from the fact that so far I've not learnt the words for him/her/we/they. These singers only have eyes (and lyrics) for their one true love.