I don't understand why "this" is not accepted here. I am french, and have some difficulties to do the difference between "this" and "that" in english, so in romanian i am really confused with all the acea acelui aceea and all their friends...
this boy = acestui baiat (romanian) = ce garcon (french) (masc.). Referring to a boy that is next or close to you.
That boy = acelui baiat = ce garcon . It implies the boy is further away.