I am 23 years old,help me plz,i've been dating a 33 year old man & everything seems 2 b wrong but I love him..

I am a successful person so far,concentrating on my studies and all, my life has been going the wrong way ever since I met this guy who is 33 years old, he is divorced and he has a kid.... I love him so much and we've been together now for almost a year,,,,,, ever since we met he always told me he wanted us to marry nd have a family as he is 33 and he needs to settle down..his kid lives with his mother and I am aware of the fact that my family REFUSES this marriage.what should I do.I love him but I am so lost.I'm in struggle.I know I will be facing lots of problems if we got married,the kid,the age difference, my family's objection, my friends too,and he always tells me that he knows I love him and will never leave him even if everyone stood our way..but I always think that we do not live alone in this world... hould I agree to marry him and leave my whole world behind or what? plz help me. also sth weird happened.he kissed on our 2nd date,he kissed me pionately, is that normal?