listen okay I know some people think Dennis is going to be with Amy next season but honestly I really do not think he has any sort of romantic inclinations for her. he was pretty adamant with Santos early in the season that it wasn't like that, and even made that amazing face of near disgust at the prospect. not that Amy isn't lovely, but he's not helping out at the farm to also hook up with her. he's quite literally just that kind of person who wants to be helpful.
Santos even says that when she's talking to Robby, about how he's helping out on the farm and part of the street team, then of course working 12+ hour shifts in the ER. like he just has that need to help even at a detriment to himself. which, honestly, is probably what Javadi would have said if she was having that conversation with someone else.
but also... I do think Dennis is using Amy's farm to fill a void. he grew up on a farm, and it's something he had to leave behind when he left for college. that's a big lifestyle change. plus, imo, it also helps fill the void of missing his family as well. and getting to partly step into those shoes, to be almost part of a family again, probably feels like he's healing something but I fear it will only end up hurting him. especially if he does actually try to listen to Robby's advice and have some boundaries.