Dreams are the realization of subconscious wishes. You dreamed that your neighbor's playmate got married, and the day before yesterday you had a dream of having twin sons. These pictures all show that you subconsciously want to go on with your current boyfriend. In the dream, both yourself and your playmate actually symbolize yourself. Your parents don't agree with you, so as long as you are stimulated by marriage, children, love and so on in real life, it is easy to have this dream. Because subconscious wishes can't be realized in reality, they will be realized in dreams.
Suggestion: If you are sure that this man is worthy of your life, then do your parents' ideological work. I think both parents want their daughter to find someone who can support her until she is old.