I get the "are we not good" if I take too long to reply as well!! When I reply it is with an "LOL, phone was, I was...etc" and answer question. This is the truth, because if I have phone, I answer text if not busy.
That was a bit petulant on H's part "do you care?" He was itching for a retort and I think you did pretty good up until the "you mad at me" When you said "u usually remember" you could have said also "Jealous, because it takes me 1,000 times lol" and made it light. Texts can get misinterpreted. So if you meant it as a compliment say so. He does not have tone to go on....