First of all I love the name. I have a friend and we call each other lobster friends because when a lobster finds another lobster they stay together forever.
Being apart tends to stir things up that normally stay hidden. My husband and his girlfriend started their relationship while my husband was away for work. It does make things just that much harder to not have that physical reassurance from your partner when they are embarking on a new relationship. Be patient with yourself and let yourself feel whatever it is that you are feeling and then ask yourself "why"?
Everything will be ok in the end. If it's not ok it's not the end.