you went out with mammon, as the afternoon went a guy tried to flirt with you.

as soon as he sees the man flirting with you he races over and steps between the two of you, rambling on to the guy about how you're off limits

When the other guy leaves he does a little proud pose, he definetely felt jealous but won't admit it.

when you asked him, he responded Jealous? I'm not jealous, the great Mammon doesn't get jealous… as he crossed his arms