Relationships

Romantic quandary. What would you think in this situation?

I'm involved with a girl for 18 months. We can't get enough of each other, are madly in love and want to spend our lives together. We spend an hour or so talking on the phone every day.
Suddenly, one day, I keep calling her every day but, she's ALWAYS got an excuse not to talk to me! She's tired, too busy with housework, at the store, a Dr. appt. visiting friends/relatives, needs some space to figure out a few things, all perfectly legit reasons that I don't have a problem with, especially since she still very willingly says that she loves me very much.
The problem is, these excuses have been used for a solid 2 months!! Every day, "I'll call you tomorrow." Problem is, tomorrow never gets here and there's always another excuse! Okay, I'm busy, too and have a number of things going on but I'm always willing to set aside at least an hour a day to talk to her! But, I never get the chance to! All I get is her answering machine or I can't get through to that! I'm TIRED of leaving messages and I don't WANT to just type texts or e-mails to her!! I want to TALK TO HER!!! VERBALLY!!! I've officially given up on even TRYING to call her, anymore!! Maybe if I just don't even bother trying, she'll wonder why and start trying to contact me, for a change!!
I'm just starting to get the feeling this relationship has become a one way street!! I'm VERY MUCH in love with her and, at least she still SAYS that she loves me, too but, how real IS that love when she can't even afford to talk to me, verbally, AT LEAST one day a week? Am I asking too much?
If I know her as well as I at least like to think I do. she'd be SUPREMELY pissed at ME if I treated her the same way!! Well, I guess I'll find out after I stop calling her for a few days!
Am I wrong for doing this? What would YOU do/think if this was your situation?

Romantic quandary. What would you think in this situation?
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