The two are in custody on felony armed robbery charges for an incident in January. Police say they robbed a person in Oshkosh after talking with the victim on Meetme.com.
Oshkosh Police say charges are also pending against the two for a December 2015 robbery.
"We don't want to get into too much detail at this time, we're reaching out to the public only for the fact that we're not sure if there's other victims out there," said Officer Joe Nichols with the Oshkosh Police Department.
Police say one victim was robbed at their home, but another was in a public place.
Experts say if you plan to meet up with someone you met online, you should always meet in public and bring a friend along if possible.
"Anyone who is hesitant to meet in a place that is public or for you to bring along another person, that's a huge red flag right there," said UW-Green Bay Social Media Specialist Jena Richter.
Richter also said it's important to never give out personal information like full name, address or phone number to someone you meet online.
Oshkosh Police believe there are other victims, and are asking anyone who was on Meetme.com and was the victim of a robbery that hasn't been reported to contact them.