I tend to be pretty skeptical when it comes to situations like this. If there is no scientific explanation then it isn't true, that is how I think of it. There are always coincidences, misunderstandings and even vivid imagination.
Do you think this person could have such a big impact on you that you give too much weight to these instances? Or why did you mention 'him', is he connected to these instances in some other way?
Sometimes we have an out-of-body experience and the truth is we don't really know what the explanation might be.