If it is watered it will flourish
Ibn al-Jawzi (may Allaah have mercy on him) said:
A person may be exposed to the causes of love so he falls in love, and he may see a person and this first glance does not create love, but repeatedly looking at that person and mixing with him or her may lead to what was unthinkable.
Some people may look at a person and that creates some kind of love, but then they keep away and the love disappears, because continual looking may cause love to grow, like a garden planted with seeds which, if it is neglected, will shrivel and die, but if it is watered it will flourish.
Dhamm al-Hawa, p. 237