Catullus and Lady Gaga, surprisingly, have much in common. For starters, both are bisexuals (see Catullus 99 for proof). Also, Catullus is never afraid to say what he feels, as is Lady Gaga, even if it may offend others. Both also have very intense feelings, as are expressed in their art. Both are also artists in the care they take in constructing their poetry/songs. Both are also seen as unconventional, Catullus being especially down-to-earth and real, especially in comparison to much more "proper" poets like Horace. Lady Gaga is unconventional in that she is a very unique performer and she dresses with a one-of-a-kind fashion. Catullus is one of the few that would include a dare in his poetry like "You think that I would not dare to force you 200 sitters/Together to perform oral sex on me?/Consider this: I'll scrawl dirty pictures all over/The front of your tavern." (Catullus 37) Lady Gaga, on the other hand, has a hit song about loving Judas Iscariot, one of the men responsible for Jesus' death. This could obviously upset some people.
Catullus didn't have the overwhelming media machine behind him like Lady Gaga currently does. Media does so much for Lady Gaga to get her message out and Catullus didn't have this power. At the time, Catullus was also not writing for his career; he was not writing to impress anyone. His poetry was only written for his immediate group of friends, and therefore, among only those who saw the poetry, he was non-controversial.