Taking on a partner's traits

My boyfriend and I have been dating for six months and yesterday he did something that I do,he made up a song on the spot about the situation we're in😂. I was never really aware of the fact that I do that until we started dating. The first time I did it with him in the room he laughed and that's when I realized that perhaps making songs up about the things you're seeing and doing wasn't normal. I do it without thinking,I even did it when we were hanging out with his friends,they had a laugh,we had fun 😂🙈. So on Saturday we're lying in bed and he starts singing a song he made up on the spot about what we were doing that day😂,it was so sweet and natural. I really love him y'all,he is the best.