This woman disgusts me

A recent "Dear Abby" column from the Chicago Sun-Times has me pretty upset. The writer is asking for advice in dealing with her sister's open admissions of infidelity. Here's the low lights: "While making plans to visit me for a few days, she asked if I could 'hook her up' with any guys...A few days later, my sister informed me that her “boyfriend” had broken things off with her."

she goes on to say that she's "disgusted," and that she wants to "handle the situation" that "finds offensive."

She hears back a simple answer: "Handle it by telling your sister exactly what you have written to me. That should get the message across succinctly."

I'll tell you what, though, I want to add more. There's absolutely no way that I would let anyone use a trip to my house in such a way, and to even ask to do so is disrespectful to me and to her husband. We often end up in situations where we aren't as happy as we wish we were, but anyone with an ounce of character would communicate that info to their partner rather than violating the promised made in the relationship. You simply don't do that to people you care about.