fiance went to stay at a friend's last night. he isn't home yet. I'm not suspicious or anything and…

fiance went to stay at a friend's last night. he isn't home yet. I'm not suspicious or anything and I don't have a problem with his friends but whenever he leaves I just... idk if im depressed. but I can't do anything when he is gone. if he is at work I'm fine but overnight I feel myself just waiting for him to get back. I can't sleep in our bed at night if he isn't there. but during the day sleep is all I'm willing to do cause then I can pretend he is just in the living room on his computer or something. I just feel alone. something is wrong with me. I cannot function if he isn't here.