Nice tune, you are shooting straight for the pop middle I think. I think the mix comes across as light on the bottom, so maybe pump up da bass some, it would help drive the tune.
Alternatively, you might slice some fizz away from those fizzy synths?
Vocally, to whatever extent possible, you might pitch the lyrics to a greater range beyond the interval (a fourth?) where they reside now. Perhaps towards the ending, pop in a different vocal run or something?
it's a very pleasant tune. Good luck getting her back! I bet this song would do the trick.
cheers,
-Tom