I don't think you're at all out of line. It was insensitive of him to let you know that he's seeing new people while living in your home. If he's waiting to save money before he can get his own place, I'd go so far as to say that his time could be put to much better use by getting a second job temporarily so he could save money faster instead of concentrating on his social life.

I don't know if you're considering asking him to leave. That's perfectly within your right. At the very least, it would probably be good to ask him to give you a time when he expects to be able to get his own place. In the meantime, you could ask him to keep the details of any women he's seeing to himself and certainly not to bring them to your place.

I had a friend do something similar to me once. While he was staying with me, he was constantly talking about the new woman he was seeing. She was always calling him, and there was lots of drama. I had never dated this person, so my dislike for his behavior was based on my perception that he was thinking a lot more about his relationship stuff and not about how to find somewhere to live.

Good luck in finding the words to talk to your friend. Sometimes it's easier to write things down.