You'll also be asked to share a few details about yourself, like your favorite way to spend a weekend.
You can add a profile picture if you'd like to, but it's not required.
However, lead researcher Dr James Roney said it was also possible that the release of the hormone was stimulated by a stress reaction.
Dr Roney told BBC News Online: "The findings are consistent with the existence of brain mechanisms that are specialised for the regulation of courtship behaviour and thus respond to cues from potential mates with coordinated behavioural and hormonal reactions.
Animal reaction Testosterone has long been closely linked with the male libido.
The researchers say their work is the first time that hard evidence has been produced in this way.
You can also add video and audio chat into the mix in almost any of the rooms. Chat Avenue is an old school chat option, complete with moderators who make sure everyone stays safe.
These chat rooms have a 1990s feel to them, in that they're fairly basic and easy to get into and offer a refreshingly simple design.
"Other researchers have found changes in male hormone levels after watching erotic movies but this seems to be the first that has attempted to assess hormone changes when males meet women on a more 'normal' level." Dr Benjamin Campbell, an expert in anthropology at Boston University, said it was possible that testosterone made men more bold by suppressing activity in an area of the brain called the amygdala, which controls the stress reaction.
The more a man's hormone level shot up, the more attractive he later admitted to finding the research assistant.
And perhaps more tellingly, the research assistant herself was able to identify those men who found her attractive.
While there, the students got to chat to a young female research assistant.
Saliva tests showed the brief interaction was enough to raise testosterone levels by as much as 30%.
The men who she judged to be doing the most to try to impress her proved to be those who registered the biggest jump in testosterone levels.