Love, peace and violence are nature of a sentient species.While cultures would be different, I dont think aliens would be all that different.
On topic, perhaps.Assuming they are humaniod and looks sexy, maybe?Hard to say without knowing what you are trying to bang.
You should be aware that every species that we know of fits into a chain and we're at the top of ours, the apex predator, chances are if there is Aliens from another planet they're just as likely to have been the most successful at war to get to the point where they're able to consume their planets resources to fly into space.
Fancy hearing me on an amateur podcast with friends gushing over one of my favourite games? https://youtu.be/1I7JfMMxhf8