While my friend liked to exchange numbers around the first day of finding a match, its probably best to message him or her on the platform for a few days or a week before doing so. Theres really no need to give out your number, or get someone elses number, if youre not planning the first date yet.

What is it called when someone uses your phone number?

It is called phone spoofing. Phone spoofing is when someone disguises the number they are calling or texting from by changing their caller ID. Some businesses do this legally and for legitimate reasons. They hijack or imitate phone numbers, either to imitate a person, business or department to get money or information.