Crushing on older men

During school, I had a crush on my teacher and then that went away just like any crush would and I just thought ok maybe that was just a quick weird little thing but then I started going to my physical therapy and I thought the physical therapist was cute. I don't really know if I have a problem or older men are my type this only started happening this year and nobody knows about this, well until now at least. If you have any advice please comment and let me know and I have has this crush on my physical therapist for a little over a month now.