Hi Portia I replied but it disappeared in the ether.
I agree about giving no information about yoeurself, and also about not asking any questions. For all of their horrible behaviour, for reasons I do not understand the MLCer wants our approval - we are the 'mommy' figure. When we hang around they just snap at us, and are unpleasant, but when we leave them alone, they come scuttling back from time to time via email or text to make sure we are still there, and 'OK' with them. The big mistake with a MLCer, and people do it all the time (myself included!) to to try and engage with them. .
If you do decide to reply, take your time, keep it light, short and casual. It might help to think of him as an acquaintance whose text you are acknowledging, but really that is it.