If a guy is very observant about you does that mean he likes you?

Anonymous
I have a work colleague that looks at me a lot... and recently I was shocked when he revealed he knew my middle name and that I have a tattoo on my lower back. When I asked how he knew that he said he's observant. Would a guy bother if he didn't like you?
If a guy is very observant about you does that mean he likes you?
3 Opinion