Hi there. Perhaps now would be the time to go your own way. Maybe, pave your own path. I'm in no way against relationships with age gaps, however yours was a significantly big one. If you tried dating someone closer to your own age it might benefit you. If he is 19 then he is probably just coming into his own as a man. This often leaves temptation for experimentation. In my opinion, the chat line that he called sounds like an experiment.
I think it is wrong that you guys hadn't been able to talk for a while and he used his first phone call too seek out someone to talk to romantically that was not you. I know that deep in your heart you know it's wrong to. Why would you want to be stuck with that? Do you feel insignificant too him in some way? Believe me when I say that just because he is older doesn't mean he is any better.
Never think that he is irriplacable because that is not true. I truly believe that you can go out and find someone that will treat you much better. You just have to be patient. Think about your current relationships.
What is bad in your relationship? What don't you feel comfortable with? Are there any traits that your boyfriend has that doesn't please you? Does he have any mannerisms that you consider disrespectful? What about pet peeves?
If you answered some of those questions you could make a list of things that you want out of a guy. In the end, insuring that you are not shallow, yet wise enough to wait for the guy that will be your match at heart. Also ask the good questions to yourslef, such as:
What traits would I like to see? What kind of personality do I get along with? Do I want a shy guy or an outgoing guy?
Weigh your possibilities! Their are a billion guys in the world, don't worry to much over the loss of one.
PM me anytime,
Kendall