Are there any scriptures that discuss romantic love? ... Do any of these scriptures, infer that romatic love is a form of true love or not?
The Gandharva vivaha is one form of relationship between a man and woman that is based on romantic interest.
From the Manusmriti:
The mutual union of the bride and bridegroom, through love is to be known as the “Gāndharva” form; it has sexual intercourse for its end and it has its source in lust.
Also other Dharma Shastras:
Gautama (4. 10).—‘When the girl loves a man and herself becomes united
to him, it is the Gāndharva form.’
Baudhāyana (1. 11. 6).—‘The Gāndharva consists in the mutual union of
the loving bride and the loving bridegroom.’
Āpāstamba-Dharmasūtra (2. 11. 20).—‘When the couple become united
through mutual love, it is the Gāndharva.’
Vaśiṣṭha (1. 33).—‘It is the Gāndharva when the man loving the girl
who loves himself, and is similar to himself, marries her.’
Viṣṇu (24. 23).—‘When ṭhe couple in love with one another, become
united, independently of the parents,—it is the Gāndharva.’
Yājñavalkya (1. 61).—‘The Gāndharva is accomplished by mutual
Āśvalāyana-Gṛhyasūtra (1. 6. 1. 5).—‘It is Gāndharva when the man
marries the girl after coming to a mutual agreement.’
Devala (Vīramitrodaya-Saṃskāra, p. 855).—‘When in a sacred place, the
man and the woman become united by mutual agreement, through love, it
is the fifth form of marriage, the Gāndharva.’
Hārīta (Do., p. 856).—‘When the girl herself selects the bridegroom,
it is Gāndharva.’
Then your next question:
If yes what do these scriptures have to say about romantic love?
This form of marriage is bad:
From the other remaining inferior marriages are born sons, addicted to
saying harsh and untrue words, and despisers of the Vedic Dharma.