Why would a boyfriend or girlfriend cheat in your own house?

It happened to me once 4-5 years ago. Ever since then, I don't ever let anyone move in with me. Nope, I didn't catch them in the act. Probably WWIII would've broken in if I would've walked into that. I would've been like ''WTF, seriously in my house, my stuff, how dare you''.

I found out because the other woman called me and sent me one of their text messages. Obviously I dumped him, rearranged some stuff and bought a new bed. I later found out the woman even ate some of my meals too.

Out of so many places to they can cheat, why would they do it in your own house.. at a place they could've easily gotten caught if I would've been dismissed earlier from work or if I had forgotten something? Why that level of great, blatant disrespect?

Why would a boyfriend or girlfriend cheat in your own house?
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