I came across these sentences:
"I've found out that you lied.
"I've discovered that she was untrue to me".
It confuses me, because I thought, that according to the rule "sequence of tenses" we can use present perfect with present simple or future simple.
I think that in the first sentence "found" in Past simple instead of present perfect should be used (or I've found out that you lie). What about the second one, I think that I discovered that she was untrue to me/ I've discovered that she is untrue to me is more suitable.
If I am wrong can you me explain why. Thanks in advance!