I have a tip that really helps my boyfriend and I when we are apart for so long. Next time you see each other, before you part ways trade your perfume and cologne and give your pillow and blanket a little spritz every week or so. Getting to smell his sent really helps me to fall asleep on those long lonely nights without him. Just don't go over board and soak your bedding with it every night, you want it to last until you get to see your loved one again. If you are unable to see them at all to do a trade in person (or run out), ask them to mail you their favorite cologne or perfume