Buddhism and Novelty of Persons I realized that, when I meet new people and especially people I have a romantic interest in, to value and idealize them disproportionately. This seems very ingrained in my personality. Here, cemetery contemplation seem less pertinent as its novelty rather than lust. 

What does Buddhism have to say about such novelty? What are the potential ways to reduce it or alter one's perspective about it?
From AN4.163 we have:


  It’s when a mendicant meditates observing the ugliness of the body, perceives the repulsiveness of food, perceives dissatisfaction with the whole world, observes the impermanence of all conditions


Paradoxically, observing ugliness is a great antidote for the seduction of attractive. The perception of ugliness develops equanimity. To see this yourself, simply look at any pair of people. Invariable, one will attract your eye and one will not. Now rapidly look at each one in turn, switching to the other when any feeling (good or bad) arises. As you do this, also acknowledge that, "This is not mine, I am not this, this is not my self."

What happens as you do this is that your mind gets exhausted trying to make coherent sense of it all and collapses eventually into equanimity. Be careful when doing this with real people because nobody likes being stared at. However, you can practice this with any movie or video that you can stop mid-play. Simply scan back and forth repeatedly until equanimity returns. When you do this, the scene will always be equanimous to you in the future. Eventually you will be able to do this in real time without bothering others.

The nice thing about dealing with others in equanimity is that you will earn trust and friendship. Out of those friendships, deeper connections will naturally evolve. And those connections will always enrich your life.