'I love you'

For a week now I have been teaching Benjy to say I love you. He's pretty good at copying, and when he cuddles me, if I then say 'What do we say now?' he'll say it. But this morning, out of nowhere - we hadn't even been practising 'I love you' today - he gave me a kiss, then another, then said 'I love you'. Amazing. My heart is still melting.