Why my boyfriend sent "I love you" message when I'm sleeping but ignored my dm on instagram?

Anonymous
He sent me I love you message but ignored my dm on Instagram, we usually talked on Instagram and WhatsApp but now he ignored my message, don't even read my dm.. But he said "good night, I love you baby" he's now also not replying to my messages on whatsapp so fast unlike before, is this bcs he's tired from work?
Why my boyfriend sent "I love you" message when I'm sleeping but ignored my dm on instagram?
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