Réponse :
I think that the suspect is the boyfriend that said that he was gone for two hours.
My first reason is that there are two glasses with ice cubes. These ice cubes have not melted, which means that it has been a few minutes since the drinks were prepared.
My second reason is that the bowl of popcorn is half empty which we can assume that the boyfriend was with the girl and he strangled her.
Explications : Bonjour, voici mon hypothèse, j’espère que cela t'a aidé.
