He wouldn't mind at all. That's a thing with free will. A person's faith does not change who they are. They are still human. Feelings for this person is natural. I say go for it.
we can love who we want but it would be best if you try to open his mind to Father that way he doesn't try to damage you by praying for you or worse yet try to get an exorist on you you never know with these nutcases. for th love part you can go to the jos site and use your aura to help with this budding love. good luck