1 In the dream, you are with your boyfriend's mother; This may be a manifestation of your hidden meaning, maybe you are looking forward to this day, maybe you have already met it. Dreaming now is just a aftertaste in your subconscious.
2 flower arrangement; ; This is a good job; Flower arrangement is a process; Arrange flowers first, then get fruit. You arrange flowers with his mother, which means that you think the same way as his mother. That is; Flower arrangement bears good fruit;
The above synthesis; Congratulations! Friend, I don't know if your idea is the same as my solution.