Boyfriend partying in college

My boyfriend of 3 years is off at college in another state. It's hard enough being long distance, I saw on his snap chat he was at a club dancing and looked high off his ass. He texted me the next day saying he tried ecstacy for the first time. I'm not gonna pretend that I don't experiment with drugs every once and a while when I go out, but when I'm doing it I'm in like 15 minutes away, not an entire state away. I'm just worried because I know how college girls and boys can be.... I'm trying really hard not to be insecure. I trust him and I know he wants to enjoy himself in college. Just anything can happen when alcohol and drugs are in the mix.