It should come as no surprise that when to get involved with someone, that you will have to talk to each other sometimes. However it could be that by putting too much emphasis on looks, you're overlooking the importance of mental and emotional compatibility.
It's true that there needs to be physical attraction. And a healthy dose of it. But the magical thing we call "chemistry" in a relationship is comprised of an interesting combinations of interest, intrigue and familiarity, not just a desire to rip each others clothes off.
While people place their priority for that primal sexual urge on different levels, that alone will not make any relationship last any length of time worth counting.