Attachment issues

I am gonna get engaged. This is a typical arranged one. I chose to say "yes" to the guy my parents set up for me. They have provided me with a list, seen a few people but I chose this particular guy. It's been three months. We only met four time so far. Next week, it's our engagement. I'm afraid whether I can love him. We aren't yet become lovers. I hope with time, there would be a bond. I know for most of the people, wedding is big and they can take it up after love. But in an Indian setup.. marriages are pretty big the first step. I always believed in love after marriage crap. It might happen as well but now I'm afraid well, will it happen?? How long will it take my heart to understand the fact someone loves me and I have to let him in.