Is my bf an alcoholic?

My bf (34) is a super high functioning responsible person. He has a very demanding career in a super competitive field, makes a fantastic living, has a nice house. Extremely responsible when it comes to his job, dog, and family. He has a lot of life long friends and is healthy for the most part. However there are many times where he gets extremely drunk with work friends or friends. I’d say it happens about once a month or once two month. He’s super loving when he’s drunk but he’s just not all there. There were 4 incidences in the last year where he’s gotten so drunk he pissed all over the floor, and last night he peed all over the bed and woke me up. He didn’t remember at all when he woke up…. I’m concerned is this alcoholism… I didn’t grow up around a lot of alcohol or consume much so idk what it is. He’s very high functioning and doesn’t drink by himself so idk what to think / do or how to talk to him about it.