Well, their lives certainly changed when they first met. And due to his face and body language, it looks like he does like her, but as for he "loves" her or not, we may never know
As a friend, yes.
Ahsoka
No. But, they have a strong realationship!
The name of his apprentice is Ahsoka Tano
Capt. "Rex" (CC-7567) had many appearances in the Star Wars: The Clone Wars TV series, but he only appeared in one movie: Star Wars: The Clone Wars (film).
No. Ahsoka has only appeared in the Clone Wars. And her fate hasn't been confirmed yet, so we don't know what happens to her
No, Ahsoka doesn't have any sentimental relationships in Star Wars: The Clone Wars
Ahsoka
No. But, they have a strong realationship!
No
Dave Filoni; the director on Star Wars the Clone Wars
Yes, Ahsoka and Rex are friends
The name of his apprentice is Ahsoka Tano
Ahsoka Tano served as Skywalker's Padawan during the Clone Wars.
Capt. "Rex" (CC-7567) had many appearances in the Star Wars: The Clone Wars TV series, but he only appeared in one movie: Star Wars: The Clone Wars (film).
Ahsoka Tano returns in season six, but only for a moment as a vision from Yoda.
If you mean Ahsoka Tano, then she is the Padawan apprentice to Anakin Skywalker in Star Wars: The Clone Wars animated movie and following animated series.
That episode is Season 3 Episode 16 "Altar of Mortis." (And actually, the only reason why Ahsoka turned evil was due to the living embodiment of the dark side of the Force corrupting her with a spell in an attempt to get Anakin to join the dark side)