Am i ready for marraige??

My marriage has been fixed in the next 3 months. I myself have chosen this guy from a lot of 7-8 guys who were chosen by my parents. He is cool and u can be at ease with him in sometime. But I am such kinda person who mingles only with people whom i feel my frequency matches, that person might be good or bad! i cannot just feel free with whom ever i meet and talk , though i don't have any problem to go up to anybody and talk, but that feeling .... it doesn't come just like that in me , though i know that this guy is good . And this applies to my friends too! i make friends with people who are seemingly very much like me, and its not that you have to do something good to become my friend, if my heart wants you to be my friend then u become one, and if i don't get that vibes from you whatever you do u cannot become my friend. Now the problem lies that I do talk to this guy but can never feel that homely,loving,friendly vibe from him! Am so confused! Even i had a boyfriend of mine who i knew i could never marry but still couldn't help being with him, just because i loved him. Am i thinking more on this? Or its just normal?