First off, dramatic much? "I'd catch a Grenade for ya?". I just found this kind of funny, since this guy is what, probably like twenty-something? I'm doubting that he's been in a lot of relationships, much less ever truly been in love. He also seems like one of those mainstream artists that purchase their lyrics, which only makes their ridiculousness even funnier.
Someone needs to tell this guy that just because he likes a girl doesn't mean she has to like या प्यार him back. Just because you're madly in प्यार doesn't mean आप can force someone to प्यार you. Besides, whoever this song is for, if anyone probably dumped him for being over dramatic, "I'd catch a Grenade for ya", which also implies a bit of obsessiveness.
To be honest, this sounds like the sort of thing (from what I've heard), that guys say when they're trying to get girls to sleep with them. "Oh I प्यार आप so much, आप know I'd do anything for you", blah blah blah. So basically this guy is going all drama king over some girl who doesn't प्यार him and possibly won't sleep with him, "Yes I would die for आप baby". Doesn't it seem like a bit much? Also, just because आप think you'd die for someone definitely doesn't mean they're going to do the same, though personally if I was the girl who this guy was लेखन about, I'd be "dying" to get away from him.
Next, "Tell the devil I said, hey, when आप get back to where you're from". First off, that's just plain rude. If you're trying to get the girl to like आप back, accusing her of being from hell doesn't seem like such a great way to do it. If a guy कहा that to me, I'd kick his sorry ass. So this guys is assuming that because she doesn't प्यार him back, she's from hell, cavorting with the devil, and obviously a bad person! द्वारा extension and definition, that kind of means that he'd think the same of anyone else who didn't like या प्यार him. So because I'm not a प्रशंसक of this guy, and I definitely don't प्यार him, that must mean that I'm from hell as well, right? Not true. Not only am I an atheist, but I highly doubt that every person on earth who doesn't प्यार this guy या his संगीत is a bad person.
"If my body was on fire/Ooh, you'd watch me burn down in flames". First, I'm not even going to bother pointing out that the "Ooh" does not fit in with this lyric, seeing as being burned to death is really nothing to "Ooh" excitedly over, unless of course you're a masochistic sadist. Next, that's just plain ridiculous. Unless you're someone like Hitler, if आप see someone burning, dying या being killed in some other way, odds are, you'd be horrified, and potentially try to do something about it. Most people wouldn't just stand there in silence, या watch excitedly. Of course, this is the same girl he's assuming is from hell since she wouldn't sleep with him, so who knows? Please note that I don't know what the लेखक of this songs intention was, this was just the way I interpreted it based on hearing it on the radio a few times.