The only way I think she could have been Carlos' girlfriend is that they were both so coldAre you saying the old business Carlos was cold like that? That was when the show first started, and maybe that is true as Gaby needed to go elsewhere for "heat".
"Can I bang your erasers" - yes, that was funny. Foreshadowing? I wouldn't think so, but with this show one never knows. The kid's pictures were certainly dark, but at least he wasn't singing American Pie. 
Gaby's kiss on Susan was very funny. Also loved the scene with Gaby and Tom. Oh, and in case anyone wonders, Tom was correct on the advise he gave Gaby. 
I think any finger twitch on Edie was just the electricity. I expect the next episode will include her funeral.
It's Bachelor Love, which is like Monopoly Money in that it has no actual value outside the game. - frodis