I have heard that some jw's when hearing popular Christian music that they say things on the order of; "it's like they (the Christian) is in love with Jesus!" they have other less kind things to say as well but I will not repeat them here.
They seem to confuse romantic love with love of what should be, even for them, love of the Savior.
I would agree with Vanderhoven that they don't seem to know Jesus nor do they want to. If you point this out to them they will claim that "Jesus is our King!" or "He is our savior". Yet they are not allowed to talk to their 'king' or 'savior'. They use 'in Jesus name' simply to end a prayer like a tailsman or something. Yes, I know a tailsman is usually a physical object, hope you get my gist.