Age difference in dating

Okay y’all. So earlier this year I became single after a 3 year relationship. I currently am hardcore crushing on this guy I met a few months ago. The only concern is he is 19 and I’m 23. Is that too much of an age gap?? He’s really mature and acts older than his age but I’ve never dated anyone that much younger than me. Is that weird or will I end up babysitting?!😅

Any and all advice is greatly appreciated ❤️