Is this a red flag? 🚩

I’m 41. Bf is 40. So we’re not kids here. We are together for 14 months.

I have never. Ever. Met any of his friends.

He has met most of mine, and we even travelled abroad to meet my childhood friends who live in Switzerland.

I know his family and his brothers. But that’s about it.

Never a dinner together, a double date, a night out. Nada.

When he turned 40 in January I helped him clean and fix his apt for all his friends to come over and celebrate his birthday.

Yet he refuses to introduce me to any of his so called good friends.

Is this a red flag?

Is he serious about this relationship or am I just fooling myself?

***edit*** to clarify: none of his friends are douchebags. They are friends who meet even his family. They have jobs, kids, wives.

I knew the party was for the boys only, but he was bragging to them how I helped fix everything.

He has met most of my friends, yes. Of course, since I live abroad, I have family and friends everywhere. So he hasn’t met all of them.