What does "sign them back up" in this context?
"And most of us do not take the person we're dating
back to the bar where we met them
or give them back to the friend that introduced us,
or sign them back up on Match.com.

Thank you for the help in advance.

Question

What does "sign them back up" in this context?
"And most of us do not take the person we're dating
back to the bar where we met them
or give them back to the friend that introduced us,
or sign them back up on Match.com.

Thank you for the help in advance.

Answer

In this context is means after you start dating (fall in love) you won't reactivate your partner's membership in a dating website.

Answer

"register them again"