'no' means 'no'

i was hosting drinks, as usual. the idea is people show up, some of them i know, some of them i don't. we have sometimes really interesting conversations, sometimes less so, while enjoying a drink, which may or may not be alcoholic. 

the other night, this guy showed up as the first and, for the first 45 mns, only guest. he offered to buy me a drink. i had just got myself a tall cup of nice tea so i declined. first, he seemed upset i wasn't drinking alcohol and insisted he would get me something else. a cup of tea really wasn't fit for drinks. again, i declined. not 5 mns later did he reiterate his wish to ply me with alcohol. after yet another try, i ended up telling him i didn't actually drink alcohol. he seemed flabbergasted. how was that possible? i could tell this wasn't going the way he was hoping. as no one else had yet appeared, he asked if the plan was that we were going to dinner afterwards. err...no. i told him he was free to have dinner, or to leave and have dinner, but i would not be eating. but again, he insisted. it would be on him, no worries (presumably thinking my unemployed status was the reason for my refusal). so i explained i had, in fact, already eaten (which i had). this clearly wasn't going to sway him because he not only asked for the menu but told me to choose what we would share. and then came back with another proposal for a drink! needless to say i was relieved when a second guest arrived! 

this guy was by far the pushiest i'd ever met. not only that, but he was easily nearing 60 and i really would have thought someone that age would have behaved better.