Putting it off or ignoring the topic
The longer you wait, the harder the person being rejected will take it. And ignoring them may cause them to ramp up their efforts in trying to get your attention.
Being indirect
Avoid saying things like “maybe” or “not this week, maybe the next?” if you don’t mean it. Not being clear will only give them false hope.
Lying
Saying you’re taken if you’re not and giving a fake number or email is a dishonest, feeble approach.
Apologizing
Saying sorry will typically make them feel like you feel sorry for them.
Being harsh or sarcastic
If you are rejecting a friend, don’t be cruel (you are friends, after all) especially if you want to stay friends.
If you are rejecting someone you don’t know well, being mean will not only hurt their feelings but could lead to an aggressive reaction or even a dangerous situation.
Writing it off as a joke
Asking if their profession of love is a joke will only hurt their feelings.
Insulting them
Show compassion and keep any abrasive opinions to yourself.
Rejecting them via text, social media, or email
They may think you don’t respect them enough to give them the time to speak in person.
Blasting them on social media
Belittling them on social media or elsewhere is unnecessary and immature.