When I wake my wife up at 5:40 in the morning to say goodbye because I need to go to work, about two seconds after she wakes up she gives me the most heart warming smile ever. I love this because she is not a morning person at all. When we were only dating and I would call her on the phone early in the morning for whatever reason, it would literally sound like she was in pain to be woken up so abruptly lol. But when I wake her now, she smiles. I spend about a minuet holding her, she gives me a blessing, I give her a blessing, she tells me to be safe at work (I work in construction) and I tell her to have a great workday, then I give her a kiss and we say bye.
Even when I do not feel like going to work that day, she sends me off in a good mood just to see that smile. I hope she never stops doing this.