Liza

First thing is you need to do is edit you first post and take out Jane's real name.

You have to cut Jane some slack because you use to enjoy her company just the way she is now, it's you who have changed, so she may be wondering, what's up with you.

Were you also in a relationship with Jane? You ca't make John love you by being mean to Jane, try to remember the person you were when you first met. Start from there.