This is creepy.

You're not over-thinking it at all. He sounds immature if he thinks it's okay to use a female actress's image on his profile. How would he feel if some "random" did the same to him? Has he asked the actress in question for her permission? I think not!

Unfortunately, it's quite common. I closed an online dating account because one profile had the picture of a local radio show host, yet the profile was for an Afro-Caribbean man. Not disclosing nationality of local personality but he definitely wasn't black!

Back to topic, he needs to be shown the implications of what he's doing and not just from your perspective.