Love is a complex human emotion and concept, one that has been studied by philosophers, religions, psychologists, sociologists and others. Love can be seen in many forms: the love of a child, the love of a spouse, and even the love of food.
Some people believe that love is a feeling that can change over time, such as when you fall in and out of love with someone. This may be true, but it is also possible that love is a practice, something you choose to engage in, and that you can work to develop. Some studies suggest that neurotransmitters, like dopamine and adrenalin, cause the butterflies in your stomach and rapid heart rate that can come with falling in love. The stress hormone cortisol is also thought to rise in the beginning of a relationship and then drop in long-term, stable relationships.
It is possible to feel love for more than a person: it can be felt for pets, wildlife, or the natural environment. It can also be felt for a place, such as a city or country, or a group of people, such as a family, community or church.
To get an idea of what it might be like to love someone, watch a few scenes from your favourite show or movie where characters appear in love. Pay attention to the unspoken elements, like lingering glances and unconscious mirroring of body language, as these convey more about a relationship than words ever could.