When did people understand "love"?
The first sight seemed to determine that our entanglement might last a long, long lifetime.
We may not necessarily talk about "love", but we learn to use it in caring for each other and dissolve it into every habitual action.
We don't know what the future will bring, but as long as we maintain this feeling, we will be able to minimize the damage.
It's best for us to remember your likes and my likes throughout our lives.