why is Toph the only girl in the group who isn't in a relationship besides Tylee?(who will get one in the seguinte hora or so XD)

Maybe she just hasn't met the right guy....but oi seen's Saka got Suki! Then yeah it'll happen.I mean come on Toph may (and does) have a rough outter shell but inside she's sweet.Any dude would be lucky to have her....

she had 2 have met some1 becuz she had a daughter. we just dont no who he is because he is never mentioned on avatar or LOK. for all we no sokka could b lin's dad.(but i doubt that bcuz he seemed 2 b seriously in amor with sokka)

She had one or two maybe moments with Zuko.

Cuz she's Toph. Also, she only isnt in a relationship in the show. She might get in a relationship later (well, obviously, she has a kid).