I can't believe no one has quoted PG's rules already. How dare you assume love is not something hackers are interested in.
Funny thing: I read it, then went to the comments and your statement never crossed my mind until I read it. Once I read "why is this on HN" I immediately agreed with you. I can't imagine why this is here. Its not close in any way to topics normally discussed here.
*I did see an interesting comment on brain chemicals changing in a relationship overtime, but they didn't explain much.