Boa not chowin down!

[Lulu]

I got two seven month old Kenyan Sand Boas about a month ago. The female has eaten but the male has yet to eat a single mouse. When I bought the frozen mice the man i bought them from got a good look at my snakes and gave me properly sized food. I know that the food isn't too big because the female ate and the mice are no bigger than the biggest part of their body. I've used forcepts to dangle the f/t mouse infront of him, ive cracked open the brain, i've cut the mouse slightly to draw blood, i've even left it with him over night for him but NOTHING. i was thinking that maybe shedding has something to do with him not eating but the first time a fed him he wasnt shedding yet. Any suggestions as to what I can do would be much appreciated.

Thanks.

-Rose