No hate please(17f)

So the story beings from 9th standard I was in school and a new biology teacher joined that year he was quiet young like 22. At that time I didn't knew him much bt as I had a good hold at biology he used to pay extra attention into me

In school only we were petty Frank to each other like he was very strict with other students bt we used to discuss things openly no feelings from my side but due to this extra attention and special care my friends used to tell me that he feels for u,obviously I ignored them at that time bt after 10th boards he used to text me jst normal things like what are your future plans and all, we became good friends and somewhere I felt something don't know may be some attraction kind of

Just 2 weeks after boards I moved to hostel and the day before going to hostel he confessed at that time I was in a shock so I didn't either said yes or no but all the things got fuckedup when my mother saw the chats and all the things got over for some time

Then my boards result came and suddenly he texted me from some random number I knew it was him from there we used to talk bt then also I had not said yes to him probably we came into relationship in July

I won't lie he is a complete green flag all the qualities never distracted me from studies always supported me in tough times but here comes the problem we belong to different cast he is not wealthy enough (not a problem to me but to my parents ofc) and I know we had no future together

I said to him all this before saying yes but he only said let's give it a try we both are loyal to each other It was a long distance but now I feel like I am doing wrong to Him. My parents would never agree to this and his life would be hell so I am thinking of breaking up with him.

What should I do?