So it's kind of confirmed at this point that her son is gay, isn't it? And we are currently move on to the new arc "My son's friend is probably gay" it seems...
I feel like this is the type of manga that would suddenly go serious at the end and not have everything go its way to show a point.
I don't think the other boy likes him that way, that would just be too coincidental and wishful. Maybe a heartbreak and acceptance is what he needs and that'll be what he gets.