Ruined a perfect relationship

My female budgerigar was in love with one of the many males she has been with her entire life (I have had her for 11-12 years im 22)

And its all gone!!!

I feel very guilty about it and probably will be for a while as those 2 could have become parents as it looked like it was headed in that direction.

When feeding I normally check to see if the doors are closed but this time I didnt though it took like 4 hours for my male budgie to realise that it was open and I didnt even check on them before.

I went for a long walk which was great as I ran into friends I havent seen in years and then I went back home.

When I go to the pet shop im going to study each male budgie carefully and should end up choosing the right one again.