Weird pasting in iPhone 4S? Was my phone hacked?

There's no possible way someone got a hold of my phone and used it without me knowing. I was texting someone and I accidentally pasted something. It was a casual message about not wanting to donate clothes (to an unspecified place). They said that they don't have time to deal with it because they have to donate to a Catholic Church? I don't go to church and I only donate clothes to Savers…
I'm worried. Has is been hacked or is it a virus? Should I go to Sprint or the Apple Store to have it fixed? I can't find anyone with a similar problem on any forums… Help!

Its called a scam

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