In terms of sound, resonance is either a reverberation that fills a space or a resonant frequency. In terms of interaction, resonance is used as a synonym for another's thoughts and ideas with which we identify, so for that moment in time we are pleased to share our mental space with theirs, to find a harmonic in that resonance we found.
As with so many things in human existence, we've adapted a word with scientific meaning and applied it to facets of personal relativity.
Resonance has an ebb and flow to it, harmonics are temporary things. We can't afford to fear change in questing to understand love. So when allegiance to a certain track has run its course, or you find yourself yearning to return to real things, remember that virtual reality is exactly that - almost, but not quite, real. Many things tthought to be real rely on being imagined as real - quantum mechs is full of this. We can learn a lot from those platforms, the thought forms that resonate, a harmony that comes from being part of something meaningful. But we have to stay true to our roots of Self where a note reverberates on the strings of our hearts. The brain doesn't know the difference between reality and imagination - to the mind, it's all the same. When virtual reality serves you well, all well and good. It is what it is - relationships exist. Or do they?