Why am I not attracted to a younger guy but now are attracted to a guy that is older than me?

I used to be attracted to younger guys but now I don't get attracted to a younger guy but now has seen that I am attracted to a guy that is older than me. I don't know why this is happening to me. I will only be in a relationship with a younger guy over the age of 18 . I am attracted to change over time. I noticed that guys that are younger than being ruder and have rejected me or they rejected them because one of the guys was one of cheater's ex boyfriends and he was very immature. Yes, I think I am attracted to chaining because I want a bit of a mature guy. They could have had more life experience and made mistakes. I was very confused why I wasn't getting attracted to any younger guy anymore but I can understand because I am a bit maturer then more and has more life experience and mistake that I tried to learn from.