Human beings are capable of being manipulative, can lie.
Some people can lie pretty well, in order to get what they want.
If girls/guys say "you're my 最爱", to me, it's a lie, a big lie.
What's 爱? 爱 to me, it means "give", not "take",
When people saying "I love you" with a purpose of gaining something from you,
the so called 爱 won't last long, 'cos it bases on lie.
Missmia, no offense, the above is just a thought from bad experience.