Manquer is a regular -er verb which means 'to miss' someone. It is a reflexive verb, which means a pronoun (me, te, le, la, nous, vous, les) must be used before the verb.

Unusually, the pronoun in this case does not indicate the object of the verb (the person being missed) but instead indicates the subject (the person who is missing someone else). For example:

Je te manques = You miss me

Tu me manques = I miss you

Use of the manquer verb should take the following structure: 

(Personal pronoun) + (direct object pronoun) + Manquer (conjugated)

Je te manque

Tu me manques

Il/Elle/On vous manque

Nous la manquons

Vous les manquez

Ils/Elles le manquent