...and then he just realised that they're "too similar and just too good mates"

.
Believe it or not I actually do feel a teeny, tiny bit bad for Helen now. She opened up and told him about being a prostitute and suddenly, completely coincidentally of course, he realised that they're "nothing more than mates". Heh. You can see it all over his face, he does still like / fancy her but he doesn't want to be the guy who got involved with a prozzer on BB. That's a bit sad, really. She MUST have noticed him withdrawing "that sort" of affection after she told him, too. *sniff, sniff*