What does this dream mean? Navy and girl left me?

Ive always wanted to be a SEAL and the day's draws closer I have this recurring dream. I kiss her good bye for basic training and i feel weird on the plane up there and then I recall going to SEAL training kissing her goodbye and seeing her hug some random guy in my head on the way down to training and then all of a sudden its like the movie jar head were shes telling me about how nice this guy is i can never remember his name and then i get shot and i realize she left me for some prick and i wake up. What does this mean aside from the obvious I trust her its just sometimes she talks to all these guys im never jealous just uncomfortable about it?