what do the lovers talk to each others hours together in mobile

My boyfriend and I talk for hours over the phone. We talk about anything under the sun basically. Sometimes, we don't really talk but we just listen to each other's sounds. =) Sometimes when he feels like it, he plays the guitar for me over the phone.

I would like to share one of my experience: MY friend was talking to her girlfriend on mobile just outside my room, I didn't wanted to but I overheard it because the voice was quite a bit audible. It was rainy season, he was saying " look a frog is moving across in the water....." than a moment passed again " look another frog is moving behind her"..than a moment passed again" How would I know why frog is moving behind frog(her)". So guys after all this I came to a conclusion that they have nothing to talk to each other on mobile except all this rubbish things.