..Sherlock Holmes didn't have a "woman" or any love relationship noted in the original Canon.
Holmes wasn't a admirer of the sex. He's not a woman-hater, but he was arrogant towards them, despite his charm.
There was one woman in the Canon that he MIGHT have had some love for and that was Irene Adler form the story "A Scandal in Bohemia". It was one of the few cases Holmes failed on, to top that, he was beaten by a woman. Despite this, Holmes respected her, and respected her so much he kept a photograph her (supposed to be on his mantlepiece), the sovereign she gave him is on his watch-chain, and he addressed her solely as "The Woman". And after this case, Holmes no longer insulted a woman's intellgence again. HURRAH! Go Irene!
He may have had a bit of attraction to others. Watson believed Holmes may have been attracted to Violet Smith from "The Solitary Cyclist" and Violet Hunter from "The Copper Beeches" but after the cased was over, he took no interest at them again. Same with Helen Stoner from "The Speckled Band". And in the Granada series, Holmes was impressed with Lady Hilda Trelawney Hope from "The Second Stain", but she's married, but he was mostly suspicous of her than anything else.
And all these women are expectional, bold, intelligent, stubborn, resourceful, strong-minded, and ood-hearted women. I'm glad he's not attracted to weak women, cheer!