I remembered during 2017, when bitcoin kicked it price value in the market rapidly, Ethereum by that time was also bounce or kicked it price in the market up to the highest peak of 0.12BTC and I think it will happen it again that's not impossible for sure, so better to buy ETH now then hold a for awhile.
The all time high of Ethereum in ETH/BTC pair is around 0.15
BTC, not 0.12
BTC. I checked history price chart of Ethereum on coinmarketcap.com. Maybe you mis-remembered it you made a typo. Anyway, it is not a serious thing, because it somehow implies that Ethereum is a good coin to invest now, and it will rise very significantly from now on.
https://coinmarketcap.com/currencies/ethereum/