Janelle asks, "I have been in relationship with a guy for the past 7 months. Now he is saying that he is not looking for a commitment, but thinks that I am. Does he just not want to be with me anymore?"
If your partner of 7 months is suddenly telling you now he doesn't want a commitment, then he's basically saying he doesn't want to be monogamous - whether he has been or not up to this point isn't clear.
If you do want a commitment from him, then its time for you to move on, because his statement clearly says he's not interested in that right now. Does it have anything to do with you? I can't tell from what you've shared, but it really doesn't matter. If you want a commitment and he doesn't, then its time to move on, heal, and then start dating again to meet someone who wants the same things you do.
Now, if you are one of the few women who aren't looking for a commitment, then he may be suggesting he wants an open relationship, that he wants to casually date other people, or that he feels things are getting too serious between the two of you. No way to tell unless you talk to him about it though, and let him know how you feel if you do happen to be on the same page.