Thanks for checking it out! Showing the actual sex part has always been the tricky part for me. I did start on a little dating sim feature but abandonded the game before completing it - too much dialogue for me to write! But I did get it so you could take any npc on a date at a random table around the mall haha.
I think the big trex outside sells the growth item but I didn't double check.
The snake outside is probably the only hidden-ish character, so if you found him you're good!