3+year relationship, how to know if he's the one?

I (f25) dated my BF(m27) for 3+ years. He is ready to settle down. Not right away but he wants to do it with me in the coming 2-3 years. Now he's waiting for me to finish school and he's saving up. I can't say I am as certain as my future as he is. And marriage is not between two couple unfortunately that's the case for us.about familyhis:-he has a big family and they are all here with us. They are very close to each other, it could be too much dramas sometimes, lots of women and aunty and gossips. As long as we don't live together in the future I am starting to learn to be get used to.-his family learned to like me over the years and we are in a good relationships. Again, as long as in the future we don't live together, life will be easier.mine:-all my family members are not here except one sibling. He is just here to study and he might go back to our family when he graduates too.-my parents are not big fans of him because they hope I can go back to their country after I finish school. Growing up us as kids we had very comfortable lives and still have until now because parents work very hard to give us good lives. My parents think me marrying him means far away from home also struggle in life. I didn't grow up doing any housework and had everything done for me. If I married him life is not easy for me and dont have family close to me to help out.Now I am not graduated yet so still have 2 years to decide but not sure if he's the one. How to tell?He has very good qualities i loves: generous, great heart, smart, warm family, no emotional damaged as a kid or a guy; family guy, can be trusted for big things, responsible, have fun together, want to marry me, can imagine him as a good father.My withdraws: his family get too closed and nosy; too much drama from his family sometimes; my parents don't approve him right now; choosing him is lowering my life quality at least for couple years; he has high expectations for me, sometimes very short tempers and get snapped at me at family related things, says mean things back to me when he feels I am attacking him, protected of his mom to a point of annoying, parents not working so in the future need to financially support parents and maybe sister, fight often but make up quick too.Need suggestions! via /r/relationship_advice https://ift.tt/3kGs4pK