<human>: Can you summarize the given text in a few sentences?

Alright, a couple of weeks ago I was walking around the apartment and saw my boyfriend had accidentally left up a window with a message that read "check out messages from Bimbo X" with a slutty picture. It said it was from a hookup site called Badoo. I assumed it was a popup or whatever, or maybe some porn thing he left open, and I'm pretty open-minded (I've told him porn is A-OK with me) so I just teased him a little and didn't think of it again.

Today I was using his computer to check my email, closed out of my tab when I was done and saw his open email account. Without even having to snoop, my eyes caught a few Badoo emails saying "Bimbo Y responded to your message!" Hm, more suspicious, right? But still could be random spam emails to entice him to use the site.

Anyway, I went to Badoo to check it out and his email address autofilled on my computer. From this I know 1) he has an account and 2) he has used it on my computer. 

So, guys, do you think there is enough information here to be worried? I know ya'll are going to tell me to talk to him if I'm worried but I don't want to look like a snoop if it's really just nothing. Part of me wants to be like "if that pop up was really nothing then let's LOG IN to that website and see if you have or have not been sending messages." Too aggressive?
<bot>: Some clues point to my bf having a profile on a hookup site. Should I talk to him about my suspicions?