from wat i know, females r more affection creatures, they'll be frenly, caring etc.... no wonder who u r, of cus must be frens lah. they can be veri close to u, calls u etc... jus cause u r her fren, so guys, pls dnt tink someone being frenly means she likes u.
to add further, often pple tinks gals r veri sensitive & gd in sensing who likes them but the truth is, they themselves have no clue about it. So wat makes them able to tell so easily?
the answer lies with the guys themselves. jus as females r opps for males, so does females being affection creatures r opps for males being not so affection. guys will normally not be so close, so nice or caring to pple ard them & those they dnt give give a dam about. they'll change their way of treating pple to those they have a fancy on. so when a gal sees tht tis particular guy treats her better than the rest, she'll know veri easily

personally, i've tried to conceal my feelings for tis particular gal cause i know she's too young for me at tis stage, so i jus wanna build the relationship, i was doing a veri gd job bout it until she found out cause some kaypo (my grp of guy frens) go & tell her bout it, tinking she prob knew. haha, she was completely shocked