Am I wrong for being pissed that some chick posted a kiss comment on my mans page?

I know its just online..but she posted a lip stick imprint comment..mind u it obviously states he is in a relationship..she found his profile cause she is friends with his cousin she saw his pic on his cousins myspace and requested him as a friend she never met or knew him at all...ok no problem..but now a kiss mark..does anybody feel me when I say that is totally disrespectful