I think there are so many things taking place in spirit world - which I believe is just a veil away from us in the physical - that we can pick up on many many things. The scratchings at the door (as you and I both experienced), or lights blowing constantly - or turning on or off by themselves, or hearing your name whispered...there can be all sorts of explanations, ranging from the scientific to the spiritual, or even combinations. I tend to think that our emotions factor into it heavily, as does being more aware of entities that could be around us. Interesting that you believe your boyfriend's house is haunted. If this is the case, perhaps you are a more 'sensitive' person to whatever or whoever could be occupying the house, and that could be why you experienced this, while your boyfriend seems oblivious to such events (either that, or he isn't willing to admit to himself that he's heard/seen/felt things; many people will absolutely deny the possibility). I'm curious to hear what caused you to believe the house is haunted - besides what you shared about the scratching sounds. This subject fascinates me...I love sharing stories...