My best guy friend HATED HATED HATED snakes, but because i had a 9 year friendship with him, i chased him around my house when he came over... and MADE him touch my ball python, i dont have to chace him now, he wont hold them, but he will tolorate them... and sometimes walk up to me and poke it, and be like yup i touched it, then walk away...
just tell your man that they are very importiant to you, and that they are your passion, he should understand, if not, you could always chace him around with the biggest snake you gotjk jk, but seriously, i wouldnt worry to much about it, he might just be trying to be hard arced so he can try and be big boss man
and like Ink said, just tell him, dont say you dont have the balls, your gunna have to get them cause you have to stand up and be like dude, this is whats up.
=]