Not a teacher
In my opinion, your text is over elaborate. Try removing some adornements which are confusing and post it again. I will give you a good start, though:
"The memory of having been hurt by the relationship still..."
Look at this:
Every cat/book/thing (singular)
1. Everyone is happy.
2. Everybody is happy.
All of the the cats/books/us/them (plural)
3 . All of them are happy