I think it's a legitimate concern especially for people with specific ages that they're attracted to. If someone is only attracted to girls that are 8-11 will they continue to date that person when they are 16 even if they are not attracted to them.

This is indeed a legitimate concern. But assuming the younger partner in question is going to retain their feelings for the older person for all of those years is a mighty huge assumption. And anyone who feels comfortable making such an assumption is either overcompensating in favor of younger people, or has yet to grasp the very empirical fact that young people often change much faster than the typical older person.

Obviously people don't fall in love and live happily ever after, but that is a goal for relationships isn't it? To find the person you want to be with forever.

That, redcocoa, is the goal and expectation that our society sets up for everyone. But we should all know better than most that a one-size-fits-all type of relationship cannot work for everyone who belongs to a species where the only rule when it comes to love and desire is diversity. Some people, and perhaps many within a certain group more than others, are better suited for polyamorous relationships than monoamory, and we should not consider only the culturally crafted norm to be legitimate for everyone. When we do, we simply guarantee that a huge percentage of people will most certainly not live happily forever after, because they find themselves stuck in a type of relationship they are not suited for individually.

How do you know it will be the girl breaking it off? What if they man no longer finds her attractive and decides to go look for someone in his age preferance. Are you saying that men just don't do that? It's always the girl who decides to break it off? I find that hard to believe. It's completely possible the girl will break it off, just like it's completely possible the man might break it off.

Indeed. We should never assume either way, but encourage everyone to be self-introspective and honest with any potential partner when it comes to this.

There is a lot of divorce, but those people go into the relationship at least looking for a life-long partner. I also think that couples as they get older aren't always totally attracted to their partners and stay with them because of personality. I was wondering if this is also the case with people attracted to certain ages. Will you stay with a woman when you really want to be with a girl.

I think in many cases, the answer to that is yes. As you noted, when people have built up a bond formed by years and years of mutual trust and support with each other, then it's likely a form of romantic love will remain even when both partners begin losing their physical appeal to the other. The physical appeal is most important for many only in the early stages of the relationship.

I'm not throwing pedophiles in the role of villians I'm asking a legitimate question. If you were with a girl and she ages out of the range that you are attracted to, will you stay with her? How do you get past your lack of attraction if you do stay with her? If you know once she reaches a certain age her personality will not be what you're looking for is it fair to date her? From what I can tell you are saying yes you would stay with a girl even though you aren't attracted to them. Is that right?

I think in lieu of these concerns, all MAAs and youths--in a world where such relationships were legally allowed, that is--should strongly consider if polyamory is best for them for all the reasons you mentioned. We should never, as a society, impose the expectation of a lifelong monoamorous pairing for everyone.