He does seem pretty empty in the head
As for the stuff with Chloe... I don't think what he did was even that bad if he just owned up to it. He flirted with her a bit and said he "liked her" in a note but he/they never went anywhere with that. His playing it off (and telling
Chloe to play it down) is what came across sleazy and as if he possibly would cheat if there was a way around the cameras.
He could've just said yeah he liked her or was attracted to her but would've never done anything as a married man. While still not
right that would've been
fair enough IMO.
For me I don't even judge a full-on cheater on a BB show if they're entertaining (Steph Davis & Bear for example), it's just the sleazy way Jermaine went about it I didn't like. Anyway I did find him somewhat funny and enjoyable outside of the "showmance" moments. I don't think he's as
dull as people say, he's got some sense of humor and can also be a bit ironically funny. Overall I'd say a bit "meh" though.