When to speak to parents about love marriage

I am 27 and my parents are now starting to look for someone in the caste. However, due to financial issues, they are not actively looking right now. Me and my boyfriend are clear that we wanna marry each other. His parents also know about me and keeps inviting me in their important events. They give a lot of importance to me. Here, in my family, nobody knows about him or about or the fact that i am dating anyone. But they are not clearly talking to me about marriage stuff. They are looking for someone in caste but not discussing anything with me and so far didnt bring any rishta. The guy and his family is really nice so i sometimes feel like how i need to just tell everyone that he does this/that for me. But right now reluctant to tell my family about him because what if they are not ready to marry me yet and then they bring up caste and other issues , they try to do extreme research since it would still be early for them. So they may show a lot of tantrums in accepting them. So i am thinking that let them see the market, get disappointed a bit and then i introduce. I have not told about this to any cousin either. I sometimes think of bringing these people on my side but then i am afraid of not getting into any trouble.