Be careful. 30 calls aren't a few calls, i can understand talking about life like ''hey long time no speak, what have you been up to?'' but i dont think that would take 30 calls.

So be careful, i think you should talk to him, maybe suggest that you may be breaking up with him because of this just to see hsi reaction. If he plays cool and doesn't blink an eye, than probably you can break up with him for real, because probably he's interested in this other girl.