What does the word "aklimdasin" mean?

You are on my mind... meaning like he/she is thinking of you

Ops actually now I´m not sure I read it quickly when I wrote that and thought I saw akıl not aklı  wait for sure

you are on my mind

Thanks guys!!!

akıl is one of those nouns that drops its final vowel before adding a suffix beginning with another vowel.

So instead of ´akılim´ it becomes just ´aklım´ 

For a complete list of similar nouns see http://www.turkishlanguage.co.uk/pocnoun.htm