There are a multitude of reasons why he may not call you his girlfriend.
Maybe he just got out of a relationship (like in this case) and does not want another commitment that ends in pain.
Everything is pretty much perfect- we love spending time together, he really cares about me, we spend almost every night together, and we’re pretty much a ‘couple’ in the conventional sense.
Maybe he likes you, but he doesn’t want to feel “tied down” by a relationship.
Maybe he likes you a lot, but he knows that he’s not in a position where he can fully commit to you because he has a lot on his plate to deal with and will continue to for the foreseeable future. Regardless of the reason, it’s nobody’s job to play psychiatrist or detective.
”If a guy won’t call you his girlfriend after a month (two months tops), then I would say it means that he’s enjoying the relationship exactly where it is and at this moment will not take it any further unless he is inspired to.
I guess the simple answer as to why he won’t call you his girlfriend is because he doesn’t have to.