My boyriend's cat

As i woke up in the morning my boyfriend's cat entered in the room. She did not know me well yet so i kept calling at her to come nearby as i was laying. Reluctant in the beginning finally she gave in and hopped in the bed. She came nearby and with her chin touched my face and kept on rubbing my cheek. 'This is the code of this little alien to say hi.'-  I said to myself;' Why does she do it'? I often wonder about these things. Later on we went away from his house as he accompanied me to my work. When we were separating i went nearby my lover and with my face touched his face. All of sudden i was reminded of the little alien of the morning. I am doing the same thing and yes it is not helping me understand why or how. Silently i headed on towards my workplace.