Unless you two get narried, the odds are extremely high that you'll break up. And then what happens? You think it'll be one of those sweet little things where you two part as friends?
Your ex will start dating a guy who, having careful cultivated a 56 inch Dunkin Donut waist, feels that any male over two hundred pounds and less than 30% BF is a threat to humanity. So he sees a pic of you and drops the dime on your sorry ass, and lo and behold you get to meet a lot of big mo fo's in a not-so-friendly environment.
I know what you mean. I spend hours per day removing all traces. And of course on one day you forgot the needle that fell on the floor and got lost, and pops up at an unexpected moment.
Yeah, just think like, "Now, if I were on CSI with those little hotties, how would I catch this guy roiding?" Then do whatever it takes to eliminate that evidence.