i keep having the same kinda dreams all with the main thing being that my boyfriend leaves me wether its for another girl or just leaves it often leads in me waking up crying i would go into more detail but the dream isnt as clear to me anymore since ive been up a while but its always him leaving me or me seeing him with someone else being secretive etc, but the thing is in real life i know he isnt cheating on me coz we hardly spend time apart he loves me to bits but i think i know what the dreams are to related to im just unsure, when we first got together he was talking to other girls online and stuff and met a few bt nothing more than talking and we had a break and he kissed a girl who is the reason we split up cause i could see she was trouble and was trying to worm her way in , and split us up, although after this he changed alot and i mean loads i think hes actually more scared that i will leave him, but i am quite insercure about my looks and stuff anyway and that im not good enough for him kinda thing... is this rubbing on in my dreams?

Yes. I agree that these dreams are probably about your insecurity.

Have you thought about what you can do to make yourself feel more secure about yourself in your waking life?