Seeing one's boyfriend sitting next to another girl and looking happy would usually invoke feelings of jealousy and insecurity in most people, so someone feeling overjoyed at that sight is simply not realistic.
Context: I saw my boyfriend with another girl yesterday and they were sitting shoulder to shoulder next to each other! 
Hypothesis: The sight of my boyfriend sitting next to another girl and looking really happy made me feel simply overjoyed

Is the hypothesis incorrect? (Yes, no, or unknown)?