Humans are visual creatures. Therefore, it’s pretty hard not to base a relationship on looks. It’s the first impression you can give someone, the first thing to draw them in. Women often dreamt of finding “Prince Charming” while guys dream of meeting a fashion model. Later on in life, personal appearances do tend to matter a little less, but, regardless, people still base our love life on that ideal that has formed.
No worries though, everyone likes something different. Someone may find you extremely attractive; it’s all about who you’re trying to seek out. The person you were talking to could possibly be as nervous as you are. For all you know, that person's thinking about the same thing. If not, that’s okay. Try to find someone else that will appreciate you for who you are, take more steps to clean up your appearance if you’re unhappy with it. There are a lot pf people in this world, and it’s almost impossible for you not to find someone.