"a mask we all wear" is probably to hide one's life from everyone, possibly the life of being a prostitute, which becomes more evident as the song moves along.
"latex curtain stare" is the condom.
"skin slapping bare as the wind blows" the skin is the skin between the two partners, and the wind is the air between the two bodies.
"her makeup face is hollow with webs," probably really ugly underneath all that makeup to make her look "pretty"
"her wedding vows said in bed, screaming love me at an empty head" she probably has fallen in love with this guy that she was supposed to just have meaningless sex with.
"meateater" is a girl who freely gives head. a slut.
"all the youth leaking through our fingers" our youth is being victimized by the life of prostitution.
""oh, no the guilt of life."" just as it says. the prostitute feels guilty about living this way.
this is about sex.