I'm sick and tired of seeing pictures of my exes and old friends coming up on this fucking stupid website. I'm sick and tired of being reminded of my past.
I'm fucking done.
What Irbisgrief said. The ignore function is actually well implemented here, unlike on other sites. Speaking from experience, when you ignore someone, it not only prohibits communication, it also keeps you from seeing submissions from a person you blocked, and possibly other references as well.
Link
Irbis
Have you tried ignoring them?