Sure. In a circus, the performers are focused on their acts, like the trapeze artists flying through the air or the lions being tamed. There's no time for the slow - building romance and emotional exchanges that are typical in a love story. For instance, a love story might involve two people gradually getting to know each other over coffee dates, sharing their dreams and fears. But in a circus, everyone is in a rush to put on a show and there's no such space for that kind of relationship building.
It's not common at all. The grammar and the form seem a bit off. Usually, in proper English, we would say 'it is nothing but a love story'. The use of 'ain't' makes it very informal and the 'lovea' part is likely a mistake. So, it's not a phrase you'd come across in normal, well - written English, whether in literature or in general conversation.
It means that a circus is not a place or situation where a typical love story would occur. A circus is full of chaos, spectacle, and performance, which is very different from the tender, emotional connection in a love story.
It could mean that there's nothing better than a love story. 'Ain't nothing' is a very informal way of saying 'there is nothing', and 'b' might be short for 'better' in a very casual or even misspelled way.
Well, it could mean that at its core, it's simply a love story. 'Ain't nothing but' is a very informal way of saying 'it is only'. So it might be emphasizing that whatever the context is, it boils down to a love story.
Sure. A girl might say 'so i ain't no good girl story' and then start talking about how she joined a skateboarding crew. In her community, girls were expected to be into more 'ladylike' activities like ballet or sewing. But she loved the freedom and the adrenaline of skateboarding, and she didn't care that it wasn't what a 'good girl' was supposed to do.