"It's true to an extent but sometimes I need some perspective from him about what happened."

How could a man coming back into a relationship possibly explain this? Do you really think he is gonna say "Kalni.. you did not make me happy.. so I found someone else?" That was the nice version. Can you "see" the wall he might be fighting there? I mean flip it around.. could you explain it? Now.. there is surely the possibility that he is still screwing around. But.. I just don't see it. What is your expectation here.. what exactly do you want him to define?

"He said he understands and he will be fine if we dont see sis again anytime soon... which proves he doesnt really get it."

Neither do I. He is removing the issue. You wanted him to see the issue.. understand that it was an issue.. explain the issue in finite detail in words you understood. I don't know.. I think you wanted an "Emotional" response from him. Those batteries are charged now.. lots of electricity! Lemme say it again.. WATCH the BIL/SIL thing!! Don't comment on it unless he asks. Listen to what he is asking.


Relax
Eat
Think
Act normal
React.. Smartly.
Do something different.
Emulate.
Do Work.

Lets get "RETARDED" in here.