cup of tea

Ответ от Paris[гуру]
Not my cup of tea - американский сленг, например:
Some people love football, but it's not my cup of tea. I prefer bowling.
Do I like Brittany Spears? No, that kind of music isn't my cup of tea.
- что-то такое, что вам не по душе.
Этимология: Британская фраза 19-го века.
Думаю, что в "haven't seeN my cup of tea yet" ключевое слово "cup of tea" - что-то или кто-то вам по душе:
I just haven't found my cup of tea yet. - так можно сказать, если you are not in love :))
Paris
Просветленный
(20915)
Наверное это "British tea culture" т.е. я думаю, что вы правы! Самое большое, что я нашел для вас, так это вот: 'The phrase “not your cup of tea” means that something is “not to your liking.” According to the Translation Dictionary the expression got its start in the late 1800s when Brits, when referring to the popular drink, began saying that something they liked was their “cup of tea.” But time changes things. Later, probably sometime in the 1920s, the expression took a twist to indicate the opposite.'
И еще: According to Answers.com, 'The origin of this metaphorical expression has been lost, but the positive version--"my cup of tea"--has been used since the late 1800 and the negative-- not one's cup of tea--since the 1920s.'
Попробуйте и вы погуглить: Where does the expression "not my cup of tea" come from?
I hope your research will be more successful and achieve better outcomes than mine.
I wish you good luck and thanks for asking me! :))