If evolution were real, that would mean God was a liar
No, it would mean the men who wrote the Bible and claimed they were speaking for God were liars. But we already knew that right in the first three chapters of Genesis:
"God" said: "And the LORD God commanded the man, saying, Of every tree of the garden thou mayest freely eat: But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die."
But then
"And the serpent said unto the woman, Ye shall not surely die: For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil."
Who told the truth - God or the serpent? Let's see:
"And the LORD God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live for ever: Therefore the LORD God sent him forth from the garden of Eden, to till the ground from whence he was taken."
Serpent 1, God 0.