How to tame:

You need a trap-

1 stone foundation

3 stone walls

5 stone door frames

1 reinforced door

1 stone ceiling

How to make the trap:

Put down the foundation and 3 walls and the door and a doorframe as if you are making a simple 1x1 box, next you put 4 more door frames (1 on top of each wall and 1 on the door) then put the ceiling on.

You have created a Loverfella taming box