How am I [ 30M] supposed to convince myself to break up with my [19F] partner?

I always dated girls my own age. Actually was basically married after dating 7 years and was madly in love with a girl. She broke my heart and I decided I didnt really want to fall into that kind of love ever again.

I was pretty happy on my own. Juat doing my own thing and having casual relationships. Im not like a person who seeks younger partners or anything, all my partners have been my own age. But this girl at a local resturaunt asked for my number and we hit it off and I found out she was 19 and was like..... damn. But she was really nice as we always had fun conversation and she made me happy in the limited time insaw her while ordering food, so I agreed to go on a date and it was great.

We have now been dating 8 months. It has been a great 8 months. We see eachother thrice a week or so and send a couple texts per day and the entire relationship has been great. But now I feel bad because I told her we could never be really serious because of the age gap. And I can tell that is wrighing on her and its starting to weigh on me too as we start to develop a deeper connection.

Yeah, I know a 19 and 30 year old dating is weird, believe me lmao. Like i genuinely never tried ti get to this point but everything happened so naturally. Now i feel i need to cut things off but i have love for this person and cant comvince myself