Then, you get home only to receive that "I had a good time tonight" text and freeze.
Do you ghost 'em and pretend you never got the text? So instead, you have to craft the perfect reject text to settle things once and for all.
If you say you have a significant other, most times he'll back off immediately or at least respect your decision to withhold your phone number.
Between Facebook, Instagram, Twitter, Linked In, e-mail and all of the other tech-based communication platforms out there today, there are plenty of ways to give him a means to contact you without actually giving him your phone number.
I've been in situations where I thought this method was foolproof - until the guy decided to call himself from my phone after entering his number.