Give it spaces

:D Oh i think this friend of yours treats you very close because even if you are at their home, he/she acts the same and would be sleeping even if you are around. I think most people who are really comfortable with each other do this. Similarly when i am withmy BF in their home he would be sleeping when i would be watching series, i guess it can be a similar case. I hope you do not take offense because you said that you have always been in contact with each other and are talking with each other daily. so that is what matters! :D Maybe you ae being too sensitive on this. maybe you can joke and ask him why does your presense make him/her feel sleepy? heheh

You see, the screen on cellphones, monitors and televisions gives people mind a "wake up" signal(especially the blue screen) and that's probably why the person is lively through this forms of communication. If that person is always online through chats, try taking note of how long that person stays on the computer. It's more probable that the person's body and mind is stressed and is subconsciously looking for stimulating signals from screens. Worse, the person could be insomniac base on your description. It could still be mild but it's best you have the person advised. If the person don't seem to be insomniac to you,then note that there are people that are more gregarious in written forms like letters, text messages and emails. They don't necessarily mean to be rude or bored on personal confrontations. But I still highly suggest that you advice and help that person recover from insomnia, since you said in a month the person falls asleep, it would be terrible if this would cause him/her an accident.

you should give them a space for this but if already been long since like they not interested anymore to have a good relation with you but there;s must be a reason what you need to do is face to face ask what the problem to them :)