Graham,
Nice questions you always have. I think that when you behold something beautiful, its one thing to be in awe of the object, another to worship the object. Consider many cultures in the world that have a great mountain that stretches into the heavens. They have in their religion accepted it as some sort of god... Something beautiful, awe-inspiring is a stumbling block, then. I think when it comes to a woman of beauty and awe, its one thing to admire; its another to lust and objectify her by our desires/passions. When you meet that special woman, I think it will be very difficult to objectify her without in some way violating the sanctity of who she is... Because you value her so highly, you won't lust for her without violating your own conscience, as well as grieve the Spirit of God within you...
And you will face temptation when you spend time with her. But the temptations will be a means to develop and grow your love for each other that is NOT based on sexual fulfillments. The world has it backwards. They think sex is the foundation of a marriage or relationship. But sexual love is meant to be the crown of a relationship... It is meant to be a celebration of two becoming one. And its meant to be contained within covenant that is life-long and binding. Its not a toy, and its not for entertainment. And that is where our culture has been derailed.
Of course, physical beauty is not the only thing you should desire. She should be the best friend you've ever known. She should be a great accountability partner, and love the Lord more than you love Him. The beauty of her character should attract you as much as her skin and smile. 
Read Proverbs 31 about the perfect woman. This is what it says:
10 A wife of noble character who can find?
She is worth far more than rubies.
11 Her husband has full confidence in her
and lacks nothing of value.
12 She brings him good, not harm,
all the days of her life.
13 She selects wool and flax
and works with eager hands.
14 She is like the merchant ships,
bringing her food from afar.
15 She gets up while it is still dark;
she provides food for her family
and portions for her servant girls.
16 She considers a field and buys it;
out of her earnings she plants a vineyard.
17 She sets about her work vigorously;
her arms are strong for her tasks.
18 She sees that her trading is profitable,
and her lamp does not go out at night.
19 In her hand she holds the distaff
and grasps the spindle with her fingers.
20 She opens her arms to the poor
and extends her hands to the needy.
21 When it snows, she has no fear for her household;
for all of them are clothed in scarlet.
22 She makes coverings for her bed;
she is clothed in fine linen and purple.
23 Her husband is respected at the city gate,
where he takes his seat among the elders of the land.
24 She makes linen garments and sells them,
and supplies the merchants with sashes.
25 She is clothed with strength and dignity;
she can laugh at the days to come.
26 She speaks with wisdom,
and faithful instruction is on her tongue.
27 She watches over the affairs of her household
and does not eat the bread of idleness.
28 Her children arise and call her blessed;
her husband also, and he praises her:
29 "Many women do noble things,
but you surpass them all."
30 Charm is deceptive, and beauty is fleeting;
but a woman who fears the LORD is to be praised.
31 Give her the reward she has earned,
and let her works bring her praise at the city gate.
Find a woman like that, and you will be blessed.
~Sean
