Would you be suspicious?

Here's the scenario. Wife is admittedly attracted to older, well-off men. One such gentleman has recently begun flirting with her, offering drinks at his bar (without husband), to take her on rides on his motorcycle, and now in his new Bentley. To this point, she has told me about such incidents. On internet history, I find searches on the gentleman, his business, and then the following in order: How do men flirt?, how do older men flirt with younger women?, cheating if both people are married, why do men say they'll call and then don't, and one other. Should I be suspicious based solely on such a search history?