his parents will be looking at you as a potential convert which will be why their reaction was claimed to be not so negative. I suspect in reality, they reacted more strongly than was indicated to you
Incognito is correct. This is exactly what happened to me. For years my spouses family was pretty nice to me most of the time. Although they often called me 'worldly' and I hate that term. The reason they were kind most of the time is because they held out hope they could convert me someday. When they started pressing me pretty hard to get baptized I said I wasn't interested in becoming a jw. Since then the only time I hear from them is if they need money (sadly, I'm not joking). Please continue your research before you commit to marrying a jw.