What to do if i have never kissed anyone, but is this a cold-sore?

You can get one: From contact other than kissing. I don't know if you have a cold sore. A cold sore is a lesion w blisters (lip, chin, cheek, nostril ; sometimes mouth) which causes burning, pain ; itching. It is teaming w herpes simplex virus. These are most often associated w herpes simplex virus1. The lesions are often found on lips, skin around mouth, nose, chin, mouth, cheeks, ; even eye.