Love and Arousal

I do not understand love. Or more precisely, I cannot rationalize the activities that are associated with the word, at least in my own definition.

So sexual arousal is a separate process. What if we define love as strictly the cause of it? I guess this would make a lot of things easier for me. I can feel my sexual drive, so I should be able to recognize my love.

I noticed that while I am good at grasping ideas, even with foreign languages, I fail miserably when trying to express anything intricate, no matter the language I use. I can make logically sound arguments and sharp observations, but cannot show genuine feelings or impress others.

Maybe it is the same for love. I can capture the enthusiasm and the beauty of love, but cannot process or express it.