Let me just start by saying...I'm soooo not blaming him for my bad choices!
But I definitely eat way worse when I'm with my boyfriend. I only get to see him on the weekends because of our busy schedule and it without fail, I blow my diet every Saturday night. And the weird thing is, he doesn't even eat that badly! It would make more sense to me if he had junk food in his house or pigged out himself, but he doesn't at all.
I've been trying to figure out what about spending time with him makes me so likely to binge or slip up. I do well all week up until that point and then I completely blow it in one night. This is getting frustrating because it's definitely affecting my weight loss (or lack thereof!). The only thing I can figure is this: he makes me too comfortable. He is the only guy I've ever been with that I knew for a fact loved my body. I am 100% confident in his attraction to me. And since he met me when I was 30 pounds heavier and thought I was just as attractive then, I know that he's not going anywhere should I pack on a few pounds. Also, whenever I'm with him, I whine and say things like, "I reeeallly want some real food!" (Meaning bad food.) His response is always to encourage me to eat whatever I want and usually supply said food for me!
He's my comfort zone. A lot of our date nights center around food (watching a movie in bed and eating frozen gummi bears, making s'mores, going out to eat, going out of ice cream) and I kind of love that. But I'm not loving a stuck scale! Anyone else in the same boat (or maybe a boat kinda like this?)

Sometimes I have to just lay down the law, as much as it hurts. Mostly, I try to incorporate more healthy items into our meals - I basically give him a choice of healthy things. 
