boyfriend

i often dream of regection or not being able to get near the person im with at the time, ive been with my boyfriend for a month now and weve been close ever since we met a year ago. i had a dream lastnight that him and i were at some sort of party and he dissapeared, i went to look for him and he was on the stairs sitting with a girl opposite him with their legs in between eachothers and she was touching him in sexual places, i burst into a rage of emotion pointing out that i saw her touch him, he denied anything was wrong and just got angry with me and stormed off. i remember him denying it and just getting angry where as i just kept screaming at him, going insane and crying.... i have a dream book but cannot seem to find anything to explain this dream.. can you help me and tell me what it may mean.