I’ll echo what others have said about proceeding with caution.
Especially with you as an older, sophisticated man, if you have a job and nice things and she doesn’t have career/money/direction yet, dating you is going to represent the attainment of a certain type of lifestyle. It’s a pitfall of dating someone who hasn’t really put together her own life yet. Just be aware!
I dated a string of 40-somethings when I was in my 20s and probably the biggest clashes were the inevitable income/lifestyle disparities. They would be wearing prada loafers and hiring landscapers, I would be shopping in thrift stores, wearing glitter eyeliner, and sleeping late on weekends. Not that I wasn’t classy, but I was 20, not 40. They were always attracted to my intelligence/personality, but not prepared that dating a 20-something means being OK with the 20-something lifestyle. A 20-something girl is not a 40-something woman in a 20-yo’s body.
I remember one boyfriend getting frustrated after a friend’s b-day party I invited him to, which was held outside in a garage, with streamers and balloons and we all dressed up in carnival costumes and drank and danced and played badminton. It was a lot of fun! But at the end of the night he was like, “I’m too old to go to parties in garages! I am past this phase of my life!”
If you want to date a 19-yo, make sure you’re OK with sitting on the floor playing games, meeting her giggly friends, drinking bottom-shelf alcohol at home, her wearing jeans and hoodies, her job (if she’s not still a student) being low-level, or, if she is a student, the student lifestyle. In case you’ve forgotten, student life is full of drama. You drink too much, fight, cheat, gossip, betray your best friends, your best friends betray you, etc etc. Even if she’s smart and sweet and “with it”, most 19-yos are surrounded by an environment and peers that are not.