Guys can we stop pretending that cutting someone out from your social circle is as easy as "not seeing her anymore" or "defriending her from facebook". It's not going to help him because real life doesn't really work that way.

She's probably someone he sees all the time. Sometimes you're infatuated with people you see all the time and nothing is ever going to happen. Cutting those people out of your lives isn't the healthy way to get over it at all. Moving on is a difficult, painful process that involves focusing on other things and shifting your perceptions. Not just "I can't be with that person so I'll just have to not be their friend forever, even though we share a social circle which, thanks to technology, is all encompassing."