Question for All IUDs!

Mary
Hello ladies --
I've always wanted a straight-up answer to this question but never seemed to get one. I'm 18 and have been on the Skyla IUD for about 6 months. My man normally doesn't wear condoms and, I have never let my man ejaculate inside (nor will I in the future). I was curious to know who does, though? Disregarding transmission of STI's for the moment, who has done it, and is it safe with the IUD considering pregnancy and all? Just wanted to hear some opinions/stories! Thanks y'all :)