What does 'I'm lovin' it' mean?

@amityblight Thank you for your answer! Lovin' is a way of writing Loving, just written more how some might pronounce it. "I'm lovin' it" or "I'm loving it" means that you are really enjoying something. "I'm love in it" doesn't really mean anything.

Why do people say 'I'm lovin' it' instead of'i love it'?

I think the reason they used "I'm lovin' it" instead of, for example, "I love it", is that "I'm lovin' it" implies an ongoing, involved sensation, whereas "I love it" is actually sort of awkward in this situation. The point of marketing is not to be general, it's to involve the audience.

Is there a difference between 'I Love It' and'i'm loving it'?

There's also a difference between "I love it" and "I'm loving it". If you love chocolate, it only says what you feel when the issue of chocolate comes up, but if you are loving McDonald's, it implies that you're there right now and/or are actively engaged in thinking about it and loving it.