Seems like either he has an odd sense of humour (I sincerely hope he is just being light hearted/joking) or he is very disrespectful. I cant imagine saying those things to a girlfriend. Only you will know if he’s serious or just joking but if he’s serious then I would question his sincerity. I am older though and the youngsters of today are a total enigma to me so maybe if he is younger (you dont say how old you are) possibly just he doesn’t realise how inappropriate that is.
I’ve been married for 16 years to a woman I love deeply and was dating for 14 years before we married and even today if I got a message from her I would reply that moment or the very earliest I got the chance and certainly not wait until after I had posted on social media.
Having said that I’m here because I am looking for advice on how to cope with the fact that she recently told me she wants a separation as I have apparently messed everything up for which she now resents me so much she cant even find it in herself to be civil to me. Seems being devoted to her and thinking only of her for 30 years qualifies as “messing everything up”!
Anyhow, back to your post….. Its nice he also showers you with affection and does those things that are kind and clearly you appreciate but I personally think someone who really cares about another wouldnt say the other things he does.