The social philosopher Folami explains why love is governed by reason in 1209 AU (1536 CE), however is the full text fragmented as it was partially saved from his burning house where he died trying to throw out more of his works from his window.

To love is to acknowledge your feelings towards another, but is this not a sign of reason in which not your feeling govern what you do but the reasoning of you believing her to be the one you so wish to spend time with. It is never the feelings which allow you to think about her, nor is it feelings which allow you to make a move and pay attention to wooing her. Reason is what governs love and nothing else, the mere attraction can be attributed to the feelings you have yet nothing more.

[...] Reason is too combined with right [...] The right to carry feelings towards another, yes, it is what I mean. If you by reason are allowed to carry feelings towards another after they rejected theirs in return you cannot by reason be allowed to carry such feeling anymore. By all means you will foster grief and jealousy in turn also hatred, thus by reason should terminate such feelings. By all means if the feeling you harbour is never revealed you can continue to do so, but by reason this will too foster jealousy and in turn hatred towards her and the one she chooses as you dared not take the chance. However by reason you should be together if she harbours the same as you do for her and thus is given the right to continue having feelings for her, which does not apply to the other examples. The right to love walks with reason, the right to express feelings [...] For if you continue to express feelings towards someone who have rejected you then by reason you should stop as it is no longer your right to show affection in such a way.

The right to harbour feelings is the right to express them... The right to express them is dependent on the situation but more often than not governed by reason to how you should act in such situations [...] And thus love is reason [...], the reasoning of the right of expressing ones feelings towards another human being.