Crazy Little Thing Called Love?

If true love is supposed to conquer all, then what conquers true love?
I am certain everyone has their own outlook on this tedious subject.
My definition of Love is two individuals wanting to spend their lives together due to the inspiration of the other person who without existence would feel pointless. A feeling that is growing, rejuvenating and replenishing each and everyday (even more so with time spent apart) despite flaws and imperfections, if anything, in spite of anything that is not necessarily of the 'norm' creating a subconscious, unconditional devotion.

My theory however is that of an ideal world. In truth, Love seems to be of a difficult sport, clearly due to the commitment of it which should make it clear to anyone analytical of the smallest thing.
Love can come in all disguises which we will all fall victim to. At first it's all shiny and fresh and we find ourselves captivated and thrown into the hell it will later become when the comfort has set in. Arguements seem to be a good time to stick the knife in. Love becomes manipulation when the other begins touching on the others weakest points that they have confided in.
Lying also becomes easier when the trust is set in place because we begin to know how to deal with the others feelings and how to provoke them and, just as much, spare them.

Is the relationship then a mistake?
Do we need to get out in order to find that true definition?

Heartbreak can be a good thing, what does not kill you... and all. It raises questions and builds walls i.e. a defense which we should all build but can only build a decent strong wall with experience like any tradesman!
It is a vicious circle though, this 'strength' can lead to repeating the behaviour the 'dumpee' is exposed to in order to create a sense of control and false strength.

Is this way of thinking the future or are we our own worst enemies?

If love is like a sport then why not keep competing for the others feelings?
Keep things fresh and new and remain as close to the person they fell in love with, and they should also return that favour.

Too much to ask?