You get Ste's second heart by doing the Event "Country Road" and having normal Logan, by the end of the event you'll go to his house and you'll get a mini ending on the event you can get his second heart from there
Oh i think i miss it i can't do it again rights? Cause i end event country road and i don't even know ste has second heart cause i don't get second heart. ( ;∀;)
Yeah it's a one time event when miss it you miss it :\, but as a general tip if you redo the game, at the end of Country Road when you go visit the farm you need to choose to be there for Ste and then when he tries to start the naughty say you'll do later