Love riddles for teens with simple answers

What is invisible and makes people suffer from symptoms like sweating and nausea, yet people can’t survive without it?

Which one of Santa's reindeer can be seen on Valentines day?

He has married many but has never been married . Who is he?

What three words are said too much, yet not enough?

What do you call two birds in love?

It's Valentine's Day! What reindeer do we see on this day?

What makes grown men cry, but humanity would go extinct without it?

This word is a favorite of girls. Boys are unnerved on the mention of it. Once love finds its accompaniment, it becomes a lifelong event. What is it?

Of no use to one, yet absolute bliss to two. The small boy gets it for nothing. The young man has to lie or work for it. The old man has to buy it. The baby's right, the lover's privilege, the hypocrite's mask. To the young girl, faith; To the married woman, hope; To the old maid, charity. What am I?

How do you spell a pretty girl with only two letters?