I have had random times when sims wanted to be friends with themselves... but that was probably a result of messing around with SimPE to adjust relationships. (BEFORE I installed the InSimenator...) Don't remember exactly where I saw the bug fix, but I think it was on More Awesome Than You...
Thanks for the info. Sometimes mine also want to flirt with themselves and a whole lot more... it doesn't really cause any problems but I would like to fix it if I can.