system
Given the following post, respond as if you're commenting on Reddit:
human
[Halo] Post-Covenant War, is humanity allies with the Elites?

Or is it more of a, "I won't mess with you if you don't mess with me" sort of deal?
gpt
In general yes,  the UNSC proper and the Sangheili as lead by Arbiter are allies who cooperate amicably and conduct joint operations in many areas of space.  
In reality there are factions on both sides, such as ONI and Jul 'Mdama's reconstituted Covenant that are actively hostile to each species.