Husband and I have been very settled for several years as in a cosy home life. Suddenly since having our second child (2 under 2) he's had a resurgence of going out at night. He goes to play darts each week which must finish before pub kick out but he's been coming in several times very late in the early hours. We have a good sex life and I don't think infidelity - more that he gets carried away with the drink. But I am left feeling rubbish and I have expressed how this can't happen again. Now we have this weekend a family party I'll bring the children too but he's already made plans to go out with the cousins and brothers for a night on the town to the nightclubs after. It is his cousins 'special birthday' so it's being sold to me as something he has to do to- I feel his responsibilities are different he has babies the other males in the family don't- am I being unreasonable saying no to this continuation of the night? I know if I had childcare I'd be allowed to join them but it's not possible and the baby is small still feeding - it's the last thing I want to do anyway. I feel on a different page in life.
If it really was a one off I might feel ok but it's been after the repeated disrespect after darts.
Also in general do you think the weekly darts is making him crave a different lifestyle? Could it be the start of a drink problem?
To add context he is a model father otherwise, works hard, always house proud and getting on with tasks I haven't completed, takes us out all weekend.