DEAR AMY: My friend “Tina” and I have been friends since college and are now in our 50s. When we met we were members of a campus religious organization, however as the years passed we both drifted away from our religious affiliations. I now would call myself agnostic. Recently, Tina had a difficult break-up with a significant other. Since the split she has returned to religion and now mentions it often, which makes me somewhat uncomfortable, as it seems she may be trying to get me back in the fold. Over Easter, she went to church and decided that she wanted to be baptized. She scheduled it at …