Dream about boyfriend with someone else is an indication for an overwhelming emotional issue that demands your attention. You have not digested or accepted some messages. There is some problem that you need to patch up or some emotional wound that you need to bandage up. This indicates your acceptance or others, your interpersonal relationships and how you behave in your social life. You are trying to get to the root of some issue.
Boyfriend with someone else dream is about some hidden knowledge or some latent talent which you have failed to recognize. You may feel your life is too structured and orderly. Something or someone has just came out of nowhere. This is sadly an alert for feelings of being eating alive by work, a relationship or a situation in your life. You need to take small steps in your relationship, toward your goal, in a work project or whatever undertaking.
If you dreamt about boyfriend with someone else:
People in general seem to be in a somber mood and may tend to bury themselves in newspapers and books. If you are going out on a date, don’t expect it to be a particularly jolly affair. There may be reasons why your conversation is more muted than usual, but this doesn’t mean you won’t get on.