Is using a puppy picture on an apology letter cheating?

Well, i cant remember exactly what i did, but a little while ago i did make a friend of mine upset while at work. And i felt really bad about doing it, so i thought ill send her an apology email (wasnt able to get up and so it as work in a call center). But along with the apology, i attached a picture of a cute little dog doing the puppy dog eye sorta pose (my display picture), and low and behold it worked, haha. However, i just got called a cheater for it, haha. So i now present the question to you all; do you all think that attaching the puppy picture to my apology letter cheating?