The Killers - Jenny Was a Friend of Mine Lyrics Meaning

I belive that Jenny was a friend of mine, and Mr brightside, mainly, because at the beggning of mr brightside he says coming out of my cage, which could imply that he started of in a prison cells, i also think that jenny was a friend of mine follows on from Mr brightside, were peope have interited, and from the vidio footage, that in mr brightside the womans clearly having an ffir, and i think in jeny was a friend of mine he reveals how much he loves, her, she obviously only felt it was a fun thing at the time, for instance he quates "it was only a kiss", but when it says "she had somewhere to go", it appears to me, as if she was going to see another man, and his jealousy once again takes over, as he grabs hold of her, because "he wants it all", and i'd say he didn't want her to get away, he wanted her to himself, but in he events of this, he accidently suffocated her. I also think, that in mr brightside, he is looking back on the thinks that have happend, for instance what happend wih Jenny, and how he got there.