Friendship, similar interests and trust I suppose nearing 45 years with two adult sons. Negotiating daily obstacles, overcoming hurdles placed in your path, it truly is one day at a time, giving each other freedom of movement, allowing each other to develop into the better person they wish to be.
That teenage tingly feeling called love soon disappears once you settle with children, knowing the next years will come with many challenges, be ready to give and take!
I think this sums it up nicely.
The teenage love is like a caricature of love from someone who has read a vague description of it.