This is just a specialized and potentially even more toxic case of dating a best
friend’s ex. I actually know a man who married the sister of his girlfriend of
seven years. You can imagine family Thanksgivings are more than a little
strained. Again, if the two of you feel star-crossed, at least wait a while, and
then don’t share the details but do tell the relative before they find out via
the family grapevine. If at all possible, avoid this plight. If you can’t avoid it,
make sure that your motives are pure, and you’re not acting out of some
ancient feud or competition. Best place to stumble upon on Ex’s are on an online dating site, so make sure to register and meet some cool people.