A feeling, I would say is a kind of indicator or signal from an unconscious part of your brain, a very old mechanism, which may (or may not) steer you in the right direction. Romantic love could be caused by the chemical oxytocin. Unfortunately for this discussion, the English language uses the term “love” for many different things — making a discussion about it difficult. For example, there is romantic love (oxytocin), mature love (more like having a strong affinity for the characteristics of the person), love of family, love of country, love of a deity, etc. Nathanial Brandon wrote an interesting book about different kinds of love.
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