I was walking home one night from my girlfriend's house and my sister happens to head home at the same time but she was about a half a block behind me. I didn't find anything amiss, but when I got inside my sister came over and asked if I had walked home with someone. I hadn't and she said that it looked as if a person about my height (5"9) was walking with me. She couldn't tell the gender of the person, however she saw jeans and a white sweatshirt. What could this mean?

Ever heard of dopple gangers? Well they are like your person yourself and they can follow you and apparently other people can see them but not you because of the atoms or something inside the two bodies. So it could be that. Or has someone close to you recently passed away? (sorry about asking this) but it could be that person watching over you

There could be several answers to this particular question. It could be the spirit of someone you were close to. My grandfather is with me often, sometimes I can see him, sometimes others can see him and I don't. It could also have been your guardian. I have a strong belief that we are always surrounded by spirits and angels. So that could very well be the case here.

I can't deny the possibility for a spiritual presence of some kind because of experiences that I have had in my own life. But, the first thing that I would suggest doing is looking for any logical explanations as to why things have occurred.

Ye it could be your guardian angel never thought of that good thinking Clough

It can very well be an ancestor or deceased family member. Take this as a blessing and know you are well protected and loved.

Thank you guys for your responses
No one I'm close with has died recently or ever, now that I think about it

I was thinking that my sister was seeing things, but she kept seeing the figure for four blocks. She also said it looked as if I was messing around with them because it looked like we keep bumping together. I wasn't really paying attention I was texting

Maybe there was another person walking beside you on the street, and you just did not notice them, since you said you were texting on your cell phone. Sometimes people can walk beside us and we don't even know it, it has happened to me, people said Donna I walked right passed you and you never even acknowleded me, and I said because I never saw you. So it could be that.