Comparative particle 'cycles' - back to Time Dilation?

Just a short entry here. In earlier posts I described my idea that E=m=A/C (or mass = wave amplitude / Constant C (speed of light)), but only examined that model relative to itself. What if we took two moving particles with this model? Not only would their 'speed' differ (in fact, for two particles relative to each other, their speed would be exactly the same), but so would their mass - two particles travelling towards each other would have a higher relative mass/Energy content (shorter wavelength), and two particles travelling away from each other would have the opposite. This means that one particle travelling towards another would go through more wavelength cycles than it would were it travelling at the same speed as the other particle, and the opposite for particles travelling away - but if one particle was to distance itself from the first, return and 'stop' next to it, wouldn't the 'age' (wave cycles vs. time) of both particles be the same?