You cannot take kassam (swear, oath) by anything other than Allah. Not by the Quran, not by your mother's head or anything else for that matter.
Establishing any relationship with a stranger of the opposite sex is unlawful in Islam and may lead to fornication.
Our religion has determined the lawful relations between males and females and prepared for them the reasons which would offer them happiness. Islam has confined all such relationships to marriage.
Allah forbids any relationship between a man and woman outside the marital relationship. We are, in fact, ordered in the Qur’ân to lower even our gaze from the opposite sex, so how can we manage to go further and chat with the opposite sex, exchange gifts, and have such an intimate relationship as a love relationship. We are not even to go so far as look at the opposite sex unnecessarily.
Allah says: “Say to the believing men that they should lower their gaze and guard their modesty. That will make for greater purity for them, and Allah is acquainted with all that they do. And say to the believing women that they should lower their gaze and guard their modesty…” [
Sûrah al-Nûr: 30-31]
The only credible love relationship between man and woman is between a husband and wife.
The love relationship between a man and woman before marriage or outside of marriage is unlawful. It has disastrous affects on people, families and the society as a whole. It is the easiest way to fall into the sin of adultery.
The Prophet (peace be upon him) said: “A man is never alone with a woman but Satan will be the third of them.” [
Sunan al-Tirmidhî]