It's the longing of the person is what fuels the love you have for the person who isn't there with you physically. However don't nurture this kind of feeling because it's not healthy too to be yearning for
someone the whole time.
Keep yourself busy bro and let her do the same in order for you guys to grow individually... Gain new experiences from other peeps for a change that way you'll have something new to share with your partner the next time you guys chat online.
This will avoid you from being bored. And we all know that idle minds stir conflicts between two parties who are in a long distance relationship.
As the adage would have it, too much missing can be too sickening in the end