Should I end it?

I've been dating this guy for just over a month, and I can honestly say that I am starting to fall for him - hard. He makes me feel differently than other guys I've been with; I can see myself lasting with him for a very long time. He makes me super happy & I love being with him. However, we have different religious views - I am a freethinker, and I do not wish to have a religion, ever. My parents too are freethinkers. He is religious, but not strict. His parents, however, are strict and they expect whoever he marries to convert too. I do not see myself doing that,, ever. Both because I would not want to + I know it would break my parents heart if I did. What should I do? Stay with him, knowing that I'll never marry him, or just end it? We are only in high school & I know that very few relationships at this age last till marriage, but I am an overthinker. Realistically, I know that I shouldn't worry but I'd just love some input from you guys on this.