It feels like my spouse is sabotaging my diet

I've been on a diet for 2 weeks, and I was doing quite well, but my spouse isn't being supportive at all. Last night, they were sitting there eating chips with an ice-cold Coke. Don't you think one should be a little careful? I feel like I'm sabotaging myself because I couldn't resist and had a few. Do you think I should tell my spouse? I wish they would be a bit more mindful so my motivation doesn't get affected.