it has been two years she got married. Soon to be a mom. Yes, i am one of those blessed people who still share friendship with the one whom i loved. i still love her and what makes me happy, is to see her happy in her life, managing her family and work so perfectly that she can make anyone jealous, i envy her husband, as he is one lucky fellow to have such wonderful wife.
Many a times i think what if we would have got married? what if her parents would have agreed? what if we were more rebellious? would she still be happy like she is today? answer perhaps is, no. Being a Jain, there are various routines and beliefs she follows. and as she got married to a Jain, her husband shares the exact same thoughts. His family is amused when every time they see her going to a Jain Mandir, forcing her husband. everyone loves it.
My Family on the other hand would not be that exited, out Hindu temples are far different. Though nobody would have stopped her from visiting a Jain temple but nobody would show any excitement as well.
Let Temple be a separate matter. eating habits, thought process, food priorities, all needs to be adjusted, either from her side or from mine.
If you are alone its fine. Involvement of families makes it tougher.
Today whatever she does, makes her husband and family more fond of her, they can relate and know what she does is appreciable. But any other religion would not be able to tolerate. Its the nature of all religions, intolerance towards other religions.
Marriages are by nature combination of two families. and if there is a basic difference in the thought process, it becomes difficult to gel.
Though more and more people are becoming liberal, but for a middle class family, inter religion marriages are still a big deal.
Ghost ellipsis ... 
Pragmatic Post, In my opinion not only religion but social class, region, upbringing matters a lot in marriages. Marriages always need you to sacrifice a part of you.