Attraction is important when finding a mate. Over time looks aren't as important in a relationship, and this is normal. We all age, and we can't expect our partners to look "super hot" forever, but as you age with your partner, you will both maintain love and attraction as long as the foundation of the relationship is sound.
There are of course many more aspects that play into choosing a partner. Looks should only be one facet of what "attracts" you. Chemistry, and compatibility are just as, if not more important.
I hope my answer helps!