Invisible Me

Lately, I've been feeling that someone does not like my company. It is just a feeling though I still don't know if I am right with my hunch or I'm just getting paranoid. But this person does not even want my presence near him/her (I don't want to give a clue as to who this person is). He/she seems not to take notice of my mere presence around his/her vicinity. He/she would not even want to utter a simple "Hi!" and treated me as if I wasn't there. I have absolutely no idea as to what possible reason for him/her to treat me like this.

I've been flashing back on the past week. But I cannot remember a single thing or a single instance that I've done something wrong to him/her. I'm just hating this feeling of not knowing whether I have done something terribly wrong to a person for him/her to treat me as if he/she doesn't see me or as if I am so invisible that he/she would not even care to notice me.