If one is truely a friend they do not desert when the friend changes their beliefs.
This happened to me years ago when a couple left our liturgical church and became fundamentalist in the wife’s cousins mega church. Although I became Catholic and they knew that was where my heart was from the first, they left me.
We do speak at times, however, many of the beliefs she now has appear to be more like a cult. I don’t see the fruits of the Spirit from her and fear she has taken a road that leaves out charity towards anyone who doesn’t agree with her.
My beliefs have never changed and we use to talk for hours about the Lord. I have come to realize that many who claim to be Christian are not showing forth the love of Christ and are looking inward instead of outward supporting each other in time of need.
I might be wrong, but in my opinion Christians are always to show love towards others and by their example bring others to Christ by their actions, as words can just be empty. One must walk the walk, not just talk the talk. This applies to both Catholics and Protestants.
Yours in the Hearts of Jesus and Mary