It goes on to explain: "university is all about new experiences and meeting new people, so save the heartache now and start your university life as a free agent. Trust me, you won't regret it".
Rosenbaum told the Daily Mail the couple "found it really funny as we know we'll be fine."
Rosenbaum, who writes a fashion, make-up and beauty blog called loulabellerose, says although her and her boyfriend are pursuing different things for the year ahead, they have no intention of breaking up.
"Everyone else has also found it quite funny and I have had some people say it's true and most couples break up when they go to uni but it doesn't affect me, they don't know my relationship."
Her tweet has sparked debate after garnering more than 19,000 likes and over 6,000 retweets.
Some responded by discussing how their relationships had survived university, even when they went to different places, and some shared that their uni relationships had led to marriage.
According to the Daily Mail, a UCAS spokesman said the piece was written by an independent journalist for a publication called The Source.
The spokesman said: "We didn't write the advice and think students are savvy enough to make their own decisions about what is right for them.
"If they do want some advice on getting into university after their results on Thursday then we'll be more than happy to help.
"We wish everyone luck when they log on to Track at 8am to find out how they got on.
"It's worth noting we are a charity and students have the power to stop receiving any emails they don't want from us at any time."
