Physical attraction is a vital matter of society. We may always trend to talk and sponsor marriage... But what about before marriage, when a boy is getting adult and pass through teenage life having sexual desire in him. Same case also for girl. Their is always a possibility of getting attracted to opposites at this stage.
Actually when we think of modern society, keep away the Islamic law for now... What is fair relationship?? If a person is getting attracted by one's personality or if one is attracted with one's beauty, body shape... Yes of course, we in our conscious mind will choose the first one though our subconsciousness trend to choose the next one. But in wise discussion, we also agree on the point that, beauty with a personality that doesn't match with one's choice should not be get paired, cz it willnot be longer lasting.
Actually, we are living in a society where youth are mostly driven by porn. It is open secret, we all know but can't find a way to get out of it.
Marriage as earlier as possible is a possible solution that I can provide following Shariah.
But if my subconscious mind is always unhappy with what I get!! I mean, body shape, size and stuffs... For this, we need not a society where women will walk on the streets wearing lesser dress... Studying about size, shape may be included academically. But point to be noted that, this study should not be widespread like a study topic in school books or a compulsory subject. It may be a topic of study as a part of counseling the youth...
It should be counseled to provide some idea on that for marriage seeking youths and also should be provided before marriage talk.
But as I mentioned before, size & shape should never be a basis of healthy society let alone an Islamic one...but it need to be matched according to individual's desire for a better purpose. And we can fill-up doubt for getting wrong size, shape by academic study of course (lool).
Again, mixing with girls tendency is not a good practice for Islamic society. But if a girl and boy trend to attract for each other, I think... In a Islamic society, surrounding should be supportive to understand them and support them to turn it into acceptable one for the society... And in a Islamic environment, boys and girls need to be modest enough and also should be courageous enough to talk on their attraction.
I also heard a term "Mutah Marriage". But don't know how much Islamic commentators agree on this solution.