Hello Bumblebee.
Just because they are platitudes doesn't make them wrong! and those that make them are genuinely trying to guide you on a more productive emotional path. Of course rejection hurts and the more emotional investment you had in a relationship the more it will hurt when you feel your are rejected.
It doesn't really matter what the reason for rejection is, it is usually the emotional outcome that matters most.
One of the most effective ways of managing emotions is by using 'logic'. Once you get the hang of that you might find that you will be realising your own ability to create your own platitudes.
When two people part because one has rejected the other, the truth is that they both lose something.Very often the person doing the rejecting does not know or value what they have lost, whereas the person rejected feels the loss of something precious to them. They recognise that they had something worthwhile and the other party did not. This disparity enables the rejector to move on and look for something else and leaves the rejected party feeling the loss and sometimes finding it hard to move on. However, it is those who have been rejected that stand a much better chance of finding a replacement or a substitute for their loss because it is them that recognise what it is they should be looking for.
Every year in my garden I mourn the loss of all those beautiful floweres I planted and nurtured during the spring and summer. During the bleak and rather depressing winter, I contemplate what I liked and what could be made better next time round. Come the spring I have a good idea about what I will go for in the coming year and usually I'm not disappointed. Sometimes I try something completely new and occasionally that works better than things I already know and like.
I often view my own life as just another form of the natural cycle of things that come and go, so it is perhaps easier for me to move on emotionally from some of the disappointments I have from one year to another.
I hope that in the next season, you too will be able to manage and control those more negative emotions and move towards recapturing some of the good feelings you engendered in the past - except this time you might try a different garden and a different type of plant to land upon and pollinate.
The Bumble bees I know and love come back every year with a new drive and ambition to do their thing in my garden and give me the greatest of pleasure when they do so. They also feel safe to nest nearby every year and obviously instinctively know that the environment in which they live is as important as the individual plants within it.
I hope you will be able to overcome the trauma of rejection and move forward to the new life that lies ahead without carrying too much emotional baggage from the past.
Best wishes
Bill