Bad Harem Day

I'm a 31-year-old woman, and I recently started dating a guy about my age. We've gone on five dates, but we haven't had sex, as I wanted to take things slowly. He's been okay with that, but I'm quite certain he's sleeping around elsewhere. I hate the idea of him having sex with other women. Still, we aren't at the level of being committed, and I'm not comfortable having sex with him yet. What do you recommend I do?

--Disturbed

As you see it, the free-range penis should be more like those fact...