Curious And Friendly Ghost

I will try to be brief and stay on topic but since this is my first post, please bear with me a little bit. This happened two weeks ago.

My boyfriend has been living in the same apartment with two of his friends for about 6 years in Gaithersburg, MD in a 60s style three-floor apartment building. Over the years that we've been dating, I've heard jokes and comments about 'the other tenant'. They all claim to have heard footsteps in the hallway and have seen lights being turned on while no one else is home besides the person who witnessed it. Even I have heard the door to the apartment open and close and heard steps in the hallway only to find that I'm there alone. Sometimes, I've felt like I'm not necessarily alone even when I am alone.

Two weeks ago, my boyfriend decided to paint his bedroom. After we'd moved the bed, dresser and a couple of boxes back into the room, I decided to spend the night since it was so late. I kept waking up with the alarming feeling that I was being watched. This happened on a Wednesday night and I woke up at least 4 times throughout the night. That Friday night, I spent the night again so we made dinner while his roommates got ready to go out; we decided to stay in and watch a movie instead. After they left, we cleaned up our plates, set the dishwasher and headed to the bedroom but stopped in front of one of his roommate's bedroom to read a note another friend had written on a white board. I finished reading the comment and was getting ready to make a snarky remark when the door suddenly opened completely; not fast or in a slow, creepy way but in a controlled, welcoming manner. We didn't know what to say or how to react; I just stood there with my mouth open and wild-eyed. At first, I thought maybe someone was in there joking around and I looked behind the door but no one was there. My boyfriend laughed and said, "looks like they like you, they're inviting you in". I nervously laughed and said, "Oh, OK... Well thanks but no thanks!" and closed the door.

Later that same night, after the movie was over and before going to bed we went out to my car to get my backpack with my sleep-over stuff. I glanced over at the roommate's door and it was closed, just like I had left it earlier. When we returned from the car the door was open again. My boyfriend kept trying to find an explanation for it; he suggested I hadn't closed it properly and that maybe a gust of air had pushed it open when we left the apartment. I told him that I'd be willing to accept that except their apartment is carpeted and the bottom of the door always drags against the carpet making it impossible for it to move with any sort of air. I also reminded him that when it opened by itself in front of us, there was no gust of air.

I've stayed over a couple of times since then and while the weird feeling of being watched remains, I have not witnessed any other activity since. My boyfriend seems to think it's a friendly ghost since its gesture was welcoming, not dismissive.

I've witnessed other stuff throughout my life but this one left me dumbfounded because it was so obvious and deliberate.

Thoughts, Suggestionsn or Ideas?

Thanks for reading.