Everyone competely over exaggerates what Bob and Dot had and forgets what actually happened.
For all her craziness, Hex always had a thing for Bob and was actually very sweet and loving to him. Such episodes like
And not just when he was the good-looking Bob (something Dot failed to do). Even when he was banged up, battle scarred and when he was half deleted. He was really Hexadecimal's only real friend because unlike the other characters (expect Little Matrix) and other Guardians who believe that viruses should simply be deleted on sight, Bob theorized that viruses can be reprogrammed to live as Sprites and Hexadecimal was proof of that.
With the System about to restart, Bob insisted that Phong give Hex an Icon (or PID) to register her with the Principal Office so she would be backed up. Mainframe restarted and a viral scan disinfected all the Virals, but Hexadecimal (with the icon) remained intact, remarking that the scan merely tickled.
Bob and Hex (whether in virus or sprite format) had such great chemistry together. She was the only one in mainframe that really greeted him warmly when he got back from the web… Dot just gave him a handshake and treated him the same.
She clearly wants him as she kisses him and she even asked Dot’s permission if she could be with him
“So, you and Bob are?”
“Ok, just checking. I’ve always had a little thing for Bob and I-I didn’t want to get in way if you-”
“Were just friends.”
But she didn’t really need her permission at all. Hex wanted to become sisters (sis) but Dot was just an ungrateful bitch to her, she didn’t give her a chance, even after she helped bring back her father using Nulls. Hex wastes no time and kisses Bob again (for a 3rd time) and makes it clearly that she wants him. She would have done so if not for the cliché moment of being interrupted.
Before she sacrificed herself to save him and everyone else she said
“Bob, I have always loved you.”
Dot (the twit) really became a superficial bitch when she and everyone else ditched Glitch Bob because of his appearance, his new form reminded her of the negative times of Mainframe and after asking him to marry her.
She leaves him when a better looking version came along in episode
My 2 Bob's
To saying that there just friends, then asking him to marry her, then dumping him… this should have gotten Dot deleted from the system completely. But it doesn’t end there… to hold the wedding when he’s in a coma, and then not even go see him (to possibly say goodbye) after Turbo warns them that Bob is likely going to die… Dot almost makes the bad guys look good.
Then Bob crashes the wedding, almost dead on his feet and she's like "Yeah, I don't want you anymore", everybody can see how weak and ill he is, but their all like "can you please leave, go die outside." The only person to believe in him at the wedding or before hand was Enzo, and AndrAIa … but neither of them did anything to help him.
Dot loved for ages huh... oh please...