@Prof.NightJack
 
I said he was still an elitist snob.

An she only wanted to meet a nice guy (notice the social status part not being mentioned at all during the episode). He basically wanted a servant/arm candy.

^But he approached her, he was hitting on her as well

I like the theory that he’s a nice guy who was putting on an act because he’s sick of mares hitting on him just because of his social status.
 
Seriously, what Rarity did was pretty shallow.

@SpacePaladin  
>he’s a passive-aggressive jackass who is sick of having every mare who walks up to him expecting him to do everything for him  
>“My royal lips have touched common carnival fare!”  
Nope!

Meh, my preferred Blueblood fanon is that he’s a passive-aggressive jackass who is sick of having every mare who walks up to him expecting him to do everything for him. He’s still an elitist snob though.

@Trickquestion  
>It just seems logical that they’d posses the ability to speak on an intelligent level given other talents of disguise.  
Sorry but that may not be the case, f the disguise thing is anything like an advanced from of a chameleons camouflage then that’s not so, it have nothing to do with speech capabilities.

@Ereiam
 
Well, they were in the middle of an invasion at the time, not the best occasion for small talk. The parroting bit was to psych them out in my opinion. It just seems logical that they’d posses the ability to speak on an intelligent level given other talents of disguise.

@Takuto & NightJack  
Actually we hear them talk once when the ones under Twilight’s form are echoing her line of “They’re changelings, remember?”  
Still it remains unclear whether they can only parrot their target’s words and are unable to talk by themselves (the fact that no other line is spoken by any of them seems to point towards this conclusion) or if they only did it to unsettle Twilight and can actually speak on their own accord (which would be logical insofar as, in a short to middle term perspective - depending how much time a changeling needs to efficiently scavenge love by embodying somepony’s romantic interest ~~, a convincing impostor should be able to imitate its model’s speech faithfully enough to remain unnoticed ~~ but then again we know nothing of the usual changeling’s modus operandi and can only make assumptions).
 
However it’s clear that, save for Chrysalis, no changeling did any talk while undisguised - the best we hear from them is snarling and hissing which suggest that they are indeed unable to talk like ponies do.

Just because they feed on love doesn’t mean they understand it. Just like how humans may eat meat but that doesn’t mean they know what it’s like to be a freshly cooked hamburger or anything.

He did seem alot nicer in his background cameos in the “Rarity visits high society” episode.
 
Also, my headcanon for changelings is that they feed on all kinds of emotions, but the negative ones are less filling and cause adverse reactions, so they needed a ton of love to counter it, and fast.

I’m fairly certain they feed on love but don’t understand the concept fairly well.
 
Its just so utterly alien to them. The Queen herself can only imitate it fairly well but still suspiciously bitchy

@Takuto  
Good point, none of then talked, just Chrysalis.

Then does that mean… there are Changelings who feed on hate or anger?
 

Does changelings can even talk?

“Moi? A jerk? No, that was my evil twin brother, Plueplood.”

Blueblood actually being a great guy could be hilarious, regardless of whether or not it makes sense.

Background Pony has a point, but Chrysalis was only a bitch behind their backs, so no it was Blueblood the whole time.

@BP  
Or, changelings “feed” on love in the sense that they draw magical power from it.

Because changelings feed on love and the way to achieve love isn’t to act like a complete bastard. Although thinking about it Chrysalis basically is an utter bitch when she’s disguised as Cadance so I guess they’re just not very good at their PRIMARY METHOD OF ACQUIRING NUTRIENTS.