"I had suspicions since she didn't answer the questions I asked and was in a daze."
"I've been suspicious since she couldn't tell me her hobbies."
"I got suspicious when she wouldn't eat my ice cream."
"I became suspicious when she was unmoved by my burgers and snacks."
"I became suspicious when she didn't ask for anything about the designer clothes I brought."
"I got suspicious when she told me she didn't play games."
"There's a problem——"