Would you be kinda sus?

So my fiance just came home on his lunch, he works 5 mins away so he likes to come here and eat what i prepare for him. And he was like look, *shows me a box of chocolates* I smile at him but then he says "look what the lady at my work gave me, want it?" and I was like oh did she give those to all the guys in the back and he was like oh I am not sure I just came back from working on a car outside and this was on my bench"... Mind you I'm not worried that my fiance cheated or is interested but I just suspect she has a childish crush on him or something? He is the only "young" guy that works at his shop and she's like a little bit older. Idk lol