TJ is a good looking guy if you only saw his face in a picture. Any perceived good looks instantly goes out the window the moment you see him in person and realize he's short guy, he has no muscles, he's stimming like crazy, and he can't form a complete sentence. Not to mention, his lack of confidence and inability to make decisions by himself is a complete turn off for women.
A girl like Taylor would never be into TJ. Not just because of his looks or stimming, but also very different personalities. TJ said he's a homebody and rarely leaves the home. Taylor likes to party, get drunk, and gamble. She didn't look the least bit interested in TJ any time she was with him. Even when they cuddled or kissed it felt so incredibly forced and awkward as hell.
If you see a woman like Taylor going after a guy like TJ, it's for one of two reasons:
1. She's wants something the man has (money, fame, information, connections, etc)
2. She's a batshit insane woman that gets off on going after virgins/losers because it makes her feel powerful and gives her an ego boost. This is rare, but does happen.
I personally think Taylor went after TJ in the tank because she was told to, and she is now in his orbit because he won. She wants his money, his connections with the Fish Tank crew, and his fan base. That's all. Sam even tried to tell TJ not to go after Taylor after the show and to keep focusing on himself, but I doubt he'll listen.