可以用 "sincere love" 来表示 "不是虚假的爱"。

"Sincere" 来自拉丁语 "sincerus",意思是 "真诚的,诚挚的"。

例句:

"I have sincere love for you and I will always be there for you."(我对你有真诚的爱,我永远会在你身边。)
"His love for her is sincere and true."(他对她的爱是真诚的和真实的。)