Hopefully it's not all wishful thinking, because I'll admit that I've read many stories of people believing the same thing as me when it's just not reality.
From what I have seen, your observations are correct. You are almost certainly going to make things worse by putting a band aid on a relationship that is haemorrhaging...get some stitches and healing time first.
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes