Bring Me The Horizon- Alligator Blood

When I heard this song, I believed it to be about two people misbehaving or acting dangerously together, like in "Russian Roulette",and on the outside appearing to not really care about the consequences. But they keep their "secrets" close to them about the situation. I think the "Alligator Blood" refers to the narrator being cold-blooded, either emotionless, lacking courage, or both. Because of this, he (or whoever) can't keep his secret hidden very well, "My alligator's blood is starting to show..." He really is feeling suicidal because he can't seem to live life "Show me how to live...help me find a way..." but he thinks in the end he can't be saved, so he tells his friend to "Leave before it's too late.." but there is still that doubt of whether his friend can make it: "Tell me who will make it out alive." So basically, they spiralled out of control. That is my take on the song. 

Bring Me The Horizon- A Lot Like Vegas

The first time i heard it and looking at the lyrics now i think it has a romantic interpretation, namely: its a song about running away with someone you love and the fears of the gamble you are making by doing so.
its also about running away before they stagnate and their love dies as with the end of the song.

Bring Me The Horizon- It Was Written In Blood

The song ''It Was Written In Blood'' is about russian poet Sergei Aleksandrovich Esenin's suicide note which he wrote in his own blood. They pretty much copied the note word for word except for the "It was written in blood" part. Also, "Like roses we blossom then die. We fall apart" is theirs. Most of the rest is just his suicide note with some repeated lines.

I Prevail- My Heart I Surrender

I think this song is about a man who loves a woman that doesn't even know he exists but yet he still gives his heart to her in hopes that she will love him too.