I felt the same way last birthday, when abf turned up with card and flowers and gift. It ALMOST made my heart melt. Of course later that night after a few hours of solid drinking, came the calls and txts for me to help him get home.
When I didn't reply, the "I love you" of the morning became anything but loving.
This morning, he came over with card and gift, sober (for 10months), and said morning tea was on for 10am, he'd made a cake for it.
I am going out for a splash up dinner with my girls, (my 3 daughters and eldest grand-daughter, so abf has done orning tea today and lunch tomorrow.
Oh what a difference to us and for us both.
I found SR, found boundaries, enforced them and let him go.
He found he WANTED and needed to quit drinking, and did it for himself.
I am better at 65, than last year at 64, maturing at last.