'I'm loving it' is fine and, despite the shudders of some teachers of English, has long been so. The progressive form is not appropriate for permanent states, I love my children', but is OK for things perceived as temporary: I'm loving it here in Bali. It's a pity we have only a week here.
The grammar check here has put a wavy line under the 'loving' in that last sentence to indicate that it is wrong. The grammarcheck has got it wrong this time.
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