Lydia is my follower. I've given her a lot of good equipment and I don't want to lose her. I proposed to her to marry me. I noticed she goes away after the ceremony and I went to Breezehome but she wasn't there.

Where does Lydia go after you get married to her? And will she still fight alongside you throughout the game afterward?

you may need to wait a day or two.

Also maybe check Dragonsreach.

But you can take her as a follower after she is your wife.

I make a point to marry early in my game like now Brynolf is my hubby now . They seem to have the best dialogs after the marriage and most loyal to you.. Like Bryn kills his own Thieves if I attack them haha... Good hubby..

*laughs*