In this context, "love for" or "love to" seem more appropriate than "love of", isn't it?
Native speaker’s answer
Rebecca
Actually, when we speak about love relating to something like hobbies, both "of" and "for" can be used. The speaker has used "love of languages" here, but "love for languages" works just as well. Ex: I have a love for cooking. Ex: My love of cooking started when I was a child.