"ancient love" is correct and usable in written English.
You can use it to refer to love that is very old, or that is so intense as to seem timeless. For example: "The ancient love between the two poets transcended all barriers of time and distance."
Basil was a key to potency in ancient love spells.
The ancient love is recreated and so it all begins again.
As the contemporary Egyptian Ardeth Bey, he embarks on a quest to reunite with his ancient love.
Only one of the two programs (each repeated) presents the traditional form, a full-length version of an ancient love story, "The Legend of White Snake".
Most of the objects are hanging or hand scrolls, like "An Ancient Love Poem" by an 18th-century monk, Shakuhachi Jakugon.
But on a lovely warm afternoon yesterday, aside from the statue of Johnny U outside the handsome new stadium and one fan wearing a purple Unitas No. 19 shirt, it was hard for the naked eye to detect the ancient love affair with the Colts, long gone to Indianapolis.
Hurt, however, brought unusual tenderness to Krapp's recollection of ancient loves and lusts.
Tell me where dwell the joys of old, and where the ancient loves, And when will they renew again, and the night of oblivion past, That I might traverse times and spaces far remote, and bring Comforts into a present sorrow and a night of pain?
There was no limit to the ancient Egyptian love of drollery in animal form.
The ancient Greeks' love of flowers was expressed mainly in the making and wearing of wreaths and garlands.
Baidu, based in Beijing and named after an ancient Chinese love poem, sold 12.5% of its equity to outside investors.
