Scientists have spent many hours of their valuable time identifying the chemical processes that occur in the brain when we experience emotions.

Specifically about love there are clear studies. When people say they feel in love, in their brain they release some endorphins in particular.
Then they managed to conclude that "falling in love" is a chemical process.

From my side I think it is much more than that. These are extrasensory sensations that I do not believe that more experienced scientists can do a thesis about this.

Heart-love connection? Clear that it exists. But it will be very diicil to prove it. Although it is such a strong feeling that it is capable of moving mountains.

Regards appreciated @jeoleena.