my conclusion is that JWs love half-heartedly ?
You've visited his congregation and commented about them...
The atmosphere was not authentic ...there was people smiling at eachother and greeting eachother but I am a very intuitive person (keen sense of perception) and I could just smell the hipocrasy and the fakeness. Like fake "love"
You can find both fake love and real love among the JWs. And the word "love" can get thrown around in a congregation so that it is meaningless. In case you haven't learned about disfellowshipping, they call it "a loving provision" where every JW will ignore, shun, don't talk to an offender that has been examined by a judicial committee of elders and announced to the congregation as someone to be treated that way... yes, they shun someone supposedly because they love them. I knew plenty of JWs that would tell me that they loved me... but in reality would be ready to throw me under the bus at their first convenience.
Let's summarize: It's a cult.
Besides the control of the religion, his family experience could cause him to behave in such an unloving way after claiming that he loves you.