This post is full of insidious assumptions, Nihil, and like Strider said, I think you should know better. I would expect this stuff from Markie, but not from you.
If, in ideal future MAA land, you're an exclusive and your boner dies the minute you see tits or pubic hair, you got 3 option
First of all, there are probably more hebephiles than pedophiles in the overall MAA populace (I'm not talking about online, but global). And we most certainly do not get "turned off" by the onset of public hair or breasts. It's odd that you would forget this, and shows exactly why overcompensation is an unproductive tactic in those that do this (I'm not saying you).
- tell your former lgf that you hate tits and dump her
"Dump" her as if you want absolutely nothing to do with her anymore? As if your relationship cannot continue, even if in a different manner than before? As if the emotional and social bonds you built with this girl meant nothing to you, and it was only the physical attraction that mattered? Are you sure you are a real MAA and not a child fetishist?
- mess around with other little girls on the side
There's that popular yet fallacious three-part assumption again:
1) Younger people are totally monoamorous, and their romantic eye never strays from their hypothetical older love interest;
2) That once a younger person falls in love with an older person, it's for life, even though this is often not the case with peers;
3) MAAs have no choice but to be callous pricks because our attraction base naturally necessitates this.
Or you might want to shy away from long-term monogamous relationships? No easy answers here.
Actually, based on discussions I had with Humanist in the past, it probably is a good idea for many MAAs (I will never say all) to practice polyamory, because young people change quite quickly. It may be best for both partners of age disparate relationships to consider polyamory, and not for the sake of the younger person's emotional well-being only. Why do we, of all people in society, carry this assumption that the only true, legitimate form of love must be both monoamorous and for as long as the two shall live? Love can take many different forms, and as long as both parties are honest with each other from the onset, there should be no reason to judge them for simply admitting what they feel is best for them.
And once again, this popular assumption rears its absurd head: If a 7-year-old girl falls in love with an adult man, she will remain in love with him for life, and she will never naturally change in such a way that she grows out of the romantic aspect of the relationship and "move on" long before she grew out of her hypothetical older lover's preferred AoA.
I really don't predict that many theoretical MAA/child relationships will persist much into puberty. GLs like little girls, and would treat their partner like a little girl long past the time shen she would not like it anymore.
LGLers love LGs. AGLers love AGs. Some MAAs love both LGs and AGs. I'm surprised you seem to have forgotten this, or at least speak as if you have. Many pedophiles are not exclusive, even though many are. And no, pointing these things out is not mere nit-picking on my part, and I think you know that.