OK so I'm Christian, but the boy I like is mormon and his whole family is jewish (dont know how that works) so there's nothing wrong with that right?

What do you mean by "wrong"?

If you are 14, not a thing, if you are 20 and considering marriage down the road, there can be all sorts of issues esp if children would be in the future. Also what type of christian are you, baptist, methodist, catholic,

If you are a christian but don't ever go to church, and he is a mormom who never goes to church, no one will ever care, if you to every wed and Sunday night, every Sunday morning and beelive a family should worship together then there is a problem.

Also by the way basically moromons are christians, merely just one of the 100 denominations that are christains.

If religion is important to either of you, then perhaps you shouldn't get too serious.

When you are young is the time to meet and have friendships with all kinds of people and learn as many happy and painful lessons that need to be learned in order for you to become a knowledgeable and well-balanced adult. I can see by your question that how folks choose their religions is confusing to you, religion is a very confusing issue for young people(and adults, too).

You just have to live and learn, and seek advice from a stable adult whenever you are dealing with difficult issues. :)

Good Luck on Life's Journey