"Safari wants to use your confidential information stored in "website" in your keychain"

I had to install Google Chrome on my Mac for some reason, but do not intend to use it as my default browser. After logging in with my Google account, the following happened:

1. All my saved passwords on Chrome now appear in Safari saved passwords. I have no idea how this has been done.


2. Each time I visit a website in Safari, there's a popup saying "Safari wants to use your confidential information stored in "website" in your keychain".

For the 1st problem, ok it's fine, although it should have asked for my approval before importing the passwords. The 2nd is really annoying. Please suggest me a way to get rid of those popups (without disabling Keychain of course).

Thank you in advance for your help.