So there was this guy I met and we were texting each other a lot and he would text me everyday around the same time and then when we went on a date (which went really well so he says). When he dropped me off he said we should go swimming next time. He texted me not long after he got home to say he had fun and we should do it again. That was the last text and its been 2 days since that last text... why did he stop?

No idea. Why not call him and ask? Maybe his phone is broken, or he's just not that into you and he was lying about having fun. Only he knows, so ask him.

Thanks for the advice!