Responses
Personally, I wouldn't just for being really religious. For the second part, I've (briefly) dated a guy who couldn't comprehend why I needed to be friends with other LGBT people, esp. other bi people if I was in a "straight" relationship (as if my sexuality changes depending on the gender ╮( ̄▽ ̄)╭ ). So if you're the same as me, you're better off coming out.
Would you date someone really religious and who might not accept the fact that you are bisexual? (Even though you like him and he, for now, is interested in you and does NOT know about your sexuality?)