For some reason, Jesus said that he is the one giving you a NEW commandment... I don't get it. The commandment about loving one another is from the Torah, and has been since before Jesus existed.
Leviticus 19:18 and 19:34
In Judaism we need to love our neigbors as ourselves. We need to love strangers as ourselves. We need to love God wholeheartedly. We need to love our commandments and our Torah, etc...
I'd say Judaism has a lot of love, even though many think of it as a harsh hateful religion
There's a difference between loving your neighbors and Christians loving each other. The former commandment was given to the Jews, the later one was given to His disciples, in a broader sense, Christians.