OMG!!
This is EXACTLY what happened to me!!! Lara #1 ended up marrying this guy -even though she was on her honeymoon already - this imposter had her last name of Ford, and if you look at the relationship panel, you will see that he has a son named Hawas, married with kids of his own!! This imposter did NOT show up in the relationship panel at all...
I posted a topic on this exact issue!! The post was "My Sims family expanded on Vacation".. So now that I have had a chance to analyze all this, (super nerd that I am) I ask you this: did your Sim complete the "Plunder of Egypt" challenge??
I had completed the challenge- though, I tried not to cheat and use the Prima Guide - didn't realize it was the "bad" challenge - I had no negative traits - I believe Lara #1 had Adventurous, Brave, Handy, Athletic, & Artistic. She ended up with the heartbroken moodlet, because this guy died with her husband sleeping in the tent!
I will have to go back and read the thread because someone else posted that a Sim got pregnant in Egypt with no boyfriend/husband..
The common thread between your post and mine -same guy, same names, same relationship. The other person who posted the same results - will need to check. Perhaps if we could get input, then we could come up with a logical conclusion. Inititial findings are that this particular adventure is somehow bugged... if in fact your Sim completed it. I'm betting you did..
I've been taking a class this week on "motivational leadership" with my job. I have taken the Myers/Briggs test, and the funny thing was, this test I took this week showed that my strong suit was "analytical".. go figure from my posts!! ROFL!! Umm, heello... tell me something I don't know!