Am i in the wrong?

Hi ladies me and my best friend just took that next step, well..this past weekend we had planned to spend the WHOLE weekend together.. watching movies. Friday comes along and he said it’s his bff birthday if we can just stop by (he lives down the street) so I said ok fine. He drank a bit and whatever we came home around 11pm.

Next morning he wakes up and starts drinking, he drank the WHOLE day. && night he wanted to drink more so he said if he can inv his friends over (2 of them) I said ok sure.. he drank a lot.. Sunday morning (today) I had it. He’s basically been drunk this whole weekend. This is the beginning and I do not feel like this is a relationship. He’s been single for 2 years, he’s 27 I thought by now he’ll be “ready”.. he’s been trying to take that next step with me for three years, we’re here and this is NOT what I expected.

Saturday he woke up and drank 2 tall cans. He ended up taking a nap and woke up to play Xbox with his friends. He FINALLY took a break and spent about an hour with me watching a movie this was hours after his last beer. I told him for the first time that I love him. I do, he was finally paying attention to me and I’ve always loved him *hence been bff for 5 years *

Today I asked him how did he feel about me telling him that I love him and girls.. he didn’t even remember. I couldn’t help but cry.. he’s my best friend and I’m regretting this now, we’re completely different. I’m so scared to tell him anything because he says he’s never been with a “strict/ serious” girl like me. He’s use to doing whatever he wants

Today he’s been lagging the whole day because he’s been playing Xbox with his friends

Am I wrong? Did I overreact?

Edit- I knew on weekends he’d drink and hangout with his friends this is why it took us years to get here because this was my worried but he swore up and down it’s only because he’s SINGLE. He’s done with all of that he wants a serious relationship with me but then this happens