Tifa didn't
ignore,
ostracize,
bully, or
demean Cloud in ANY way as children. EVER. Let's get that straight right fucking now, because I swear the next fantwat that says otherwise needs to get some comprehension skills and common sense lessons. She was oblivious to Cloud's obsession interest in her, and in no way rejected him. He never made any attempt to get her attention. in fact, he says himself he was on the outs because he thought her friends were stupid (jealous much, Cloudo?) and that he never approached her. It wasn't as if he was standing on her doorstep with daisies in his hand and she was like, "GTFO, loser!" He (and I will repeat this again) NEVER approached her.
He stalked her, sure. Listened to her play piano, watched her through her bedroom window, even, followed her and her friends and had several wet dreams dim love for her.
But she didn't IGNORE him. She was unaware of him, and therefore not obligated to GIVE him any attention. To which, I have to ask, even if she did know--and she DIDN'T--why the fuck would she OWE that little shit anything? He mocked her friends, stalked her, and was a sullen brooder. Yeah, he's awesome.
But, since she didn't know--she couldn't react to it--and when she was FINALLY given a clue, she acknowledged him, waited for him, worried for him, and later--years later--TOOK CARE OF HIM.
She found him at the train station and instead of leaving him a mumbling mess--as saintly Aerith does to more than one person in-game--she took him in. So, for anyone that wants to argue that Tifa was a snot as a child or owes Cloud some obligatory blow-job affection, I would kindly ask that you shut the fuck up.